diff --git a/backend/src/base/location/location-db.service.ts b/backend/src/base/location/location-db.service.ts
index 2291a8b..597da35 100644
--- a/backend/src/base/location/location-db.service.ts
+++ b/backend/src/base/location/location-db.service.ts
@@ -1,7 +1,7 @@
 import { Injectable, NotFoundException } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import { LocationEntity } from './location.entity';
-import { TreeRepository } from 'typeorm';
+import { SelectQueryBuilder, TreeRepository } from 'typeorm';
 import { DeepPartial } from 'typeorm/common/DeepPartial';
 
 @Injectable()
@@ -11,8 +11,21 @@ export class LocationDbService {
     private readonly repo: TreeRepository<LocationEntity>,
   ) {}
 
-  public async getCount() {
-    return this.repo.count();
+  private searchQueryBuilder(
+    query: SelectQueryBuilder<LocationEntity>,
+    searchTerm: string,
+  ): SelectQueryBuilder<LocationEntity> {
+    return query.where('l.name ilike :searchTerm', {
+      searchTerm: `%${searchTerm}%`,
+    });
+  }
+
+  public async getCount(searchTerm?: string) {
+    let query = this.repo.createQueryBuilder('l');
+    if (searchTerm) {
+      query = this.searchQueryBuilder(query, searchTerm);
+    }
+    return query.getCount();
   }
 
   public async findAll(
@@ -20,6 +33,7 @@ export class LocationDbService {
     limit?: number,
     sortCol?: string,
     sortDir?: 'ASC' | 'DESC',
+    searchTerm?: string,
   ) {
     let query = this.repo
       .createQueryBuilder('l')
@@ -27,6 +41,10 @@ export class LocationDbService {
       .limit(limit ?? 100)
       .offset(offset ?? 0);
 
+    if (searchTerm) {
+      query = this.searchQueryBuilder(query, searchTerm);
+    }
+
     if (sortCol) {
       if (sortCol.startsWith('parent.')) {
         query = query.orderBy(
diff --git a/backend/src/base/location/location.controller.ts b/backend/src/base/location/location.controller.ts
index 36641b7..1737941 100644
--- a/backend/src/base/location/location.controller.ts
+++ b/backend/src/base/location/location.controller.ts
@@ -12,6 +12,7 @@ import { LocationGetQueryDto } from './dto/location-get-query.dto';
 import { LocationCreateDto } from './dto/location-create.dto';
 import { LocationUpdateDto } from './dto/location-update.dto';
 import { PaginationDto } from '../../shared/dto/pagination.dto';
+import { SearchDto } from '../../shared/dto/search.dto';
 
 @Controller('location')
 export class LocationController {
@@ -23,8 +24,8 @@ export class LocationController {
     responseType: CountDto,
     roles: [Role.LocationView],
   })
-  public getCount(): Promise<CountDto> {
-    return this.service.getCount();
+  public getCount(@Query() search: SearchDto): Promise<CountDto> {
+    return this.service.getCount(search.searchTerm);
   }
 
   @Endpoint(EndpointType.GET, {
@@ -36,12 +37,14 @@ export class LocationController {
   public async getAll(
     @Query() pagination: PaginationDto,
     @Query() querys: LocationGetQueryDto,
+    @Query() search: SearchDto,
   ): Promise<LocationDto[]> {
     return this.service.findAll(
       pagination.offset,
       pagination.limit,
       querys.sortCol,
       querys.sortDir,
+      search.searchTerm,
     );
   }
 
diff --git a/backend/src/base/location/location.service.ts b/backend/src/base/location/location.service.ts
index 70e577b..4e6544d 100644
--- a/backend/src/base/location/location.service.ts
+++ b/backend/src/base/location/location.service.ts
@@ -20,12 +20,14 @@ export class LocationService {
     limit?: number,
     sortCol?: string,
     sortDir?: 'ASC' | 'DESC',
+    searchTerm?: string,
   ) {
     const locations = await this.dbService.findAll(
       offset,
       limit,
       sortCol,
       sortDir,
+      searchTerm,
     );
     return plainToInstance(LocationDto, locations);
   }
@@ -44,8 +46,8 @@ export class LocationService {
     }
   }
 
-  public async getCount() {
-    const count = await this.dbService.getCount();
+  public async getCount(searchTerm?: string) {
+    const count = await this.dbService.getCount(searchTerm);
     return plainToInstance(CountDto, { count });
   }
 
diff --git a/backend/src/inventory/device-group/device-group-db.service.spec.ts b/backend/src/inventory/device-group/device-group-db.service.spec.ts
index 5e03e99..fdf9859 100644
--- a/backend/src/inventory/device-group/device-group-db.service.spec.ts
+++ b/backend/src/inventory/device-group/device-group-db.service.spec.ts
@@ -85,7 +85,10 @@ describe('DeviceGroupDbService', () => {
       expect(repoMock.createQueryBuilder).toHaveBeenCalled();
       expect(repoMock.createQueryBuilder().limit).toHaveBeenCalledWith(10);
       expect(repoMock.createQueryBuilder().offset).toHaveBeenCalledWith(10);
-      expect(repoMock.createQueryBuilder().orderBy).toHaveBeenCalledWith('dg.name', 'ASC');
+      expect(repoMock.createQueryBuilder().orderBy).toHaveBeenCalledWith(
+        'dg.name',
+        'ASC',
+      );
       expect(repoMock.createQueryBuilder().getMany).toHaveBeenCalled();
     });
   });
diff --git a/backend/src/inventory/device-group/device-group-db.service.ts b/backend/src/inventory/device-group/device-group-db.service.ts
index f94fb30..afcc8ab 100644
--- a/backend/src/inventory/device-group/device-group-db.service.ts
+++ b/backend/src/inventory/device-group/device-group-db.service.ts
@@ -1,6 +1,6 @@
 import { Injectable } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
-import { Repository } from 'typeorm';
+import { Repository, SelectQueryBuilder } from 'typeorm';
 import { DeepPartial } from 'typeorm/common/DeepPartial';
 import { DeviceGroupEntity } from './device-group.entity';
 
@@ -11,8 +11,21 @@ export class DeviceGroupDbService {
     private readonly repo: Repository<DeviceGroupEntity>,
   ) {}
 
-  public async getCount() {
-    return this.repo.count();
+  private searchQueryBuilder(
+    query: SelectQueryBuilder<DeviceGroupEntity>,
+    searchTerm: string,
+  ): SelectQueryBuilder<DeviceGroupEntity> {
+    return query.where('dg.name ilike :searchTerm', {
+      searchTerm: `%${searchTerm}%`,
+    });
+  }
+
+  public async getCount(searchTerm?: string) {
+    let query = this.repo.createQueryBuilder('dg');
+    if (searchTerm) {
+      query = this.searchQueryBuilder(query, searchTerm);
+    }
+    return query.getCount();
   }
 
   public async findAll(
@@ -20,12 +33,17 @@ export class DeviceGroupDbService {
     limit?: number,
     sortCol?: string,
     sortDir?: 'ASC' | 'DESC',
+    searchTerm?: string,
   ) {
     let query = this.repo
       .createQueryBuilder('dg')
       .limit(limit ?? 100)
       .offset(offset ?? 0);
 
+    if (searchTerm) {
+      query = this.searchQueryBuilder(query, searchTerm);
+    }
+
     if (sortCol) {
       query = query.orderBy(`dg.${sortCol}`, sortDir ?? 'ASC');
     } else {
diff --git a/backend/src/inventory/device-group/device-group.controller.ts b/backend/src/inventory/device-group/device-group.controller.ts
index 6cb7eff..fea158b 100644
--- a/backend/src/inventory/device-group/device-group.controller.ts
+++ b/backend/src/inventory/device-group/device-group.controller.ts
@@ -12,6 +12,7 @@ import { DeviceGroupUpdateDto } from './dto/device-group-update.dto';
 import { DeviceGroupCreateDto } from './dto/device-group-create.dto';
 import { DeviceGroupGetQueryDto } from './dto/device-group-get-query.dto';
 import { PaginationDto } from '../../shared/dto/pagination.dto';
+import { SearchDto } from '../../shared/dto/search.dto';
 
 @Controller('device-group')
 export class DeviceGroupController {
@@ -23,8 +24,8 @@ export class DeviceGroupController {
     responseType: CountDto,
     roles: [Role.DeviceTypeView],
   })
-  public getCount(): Promise<CountDto> {
-    return this.service.getCount();
+  public getCount(@Query() search: SearchDto): Promise<CountDto> {
+    return this.service.getCount(search.searchTerm);
   }
 
   @Endpoint(EndpointType.GET, {
@@ -36,12 +37,14 @@ export class DeviceGroupController {
   public async getAll(
     @Query() pagination: PaginationDto,
     @Query() querys: DeviceGroupGetQueryDto,
+    @Query() search: SearchDto,
   ): Promise<DeviceGroupDto[]> {
     return this.service.findAll(
       pagination.offset,
       pagination.limit,
       querys.sortCol,
       querys.sortDir,
+      search.searchTerm,
     );
   }
 
diff --git a/backend/src/inventory/device-group/device-group.service.ts b/backend/src/inventory/device-group/device-group.service.ts
index 58179ca..6c36807 100644
--- a/backend/src/inventory/device-group/device-group.service.ts
+++ b/backend/src/inventory/device-group/device-group.service.ts
@@ -19,12 +19,14 @@ export class DeviceGroupService {
     limit?: number,
     sortCol?: string,
     sortDir?: 'ASC' | 'DESC',
+    searchTerm?: string,
   ) {
     const entities = await this.dbService.findAll(
       offset,
       limit,
       sortCol,
       sortDir,
+      searchTerm,
     );
     return plainToInstance(DeviceGroupDto, entities);
   }
@@ -43,8 +45,8 @@ export class DeviceGroupService {
     }
   }
 
-  public async getCount() {
-    const count = await this.dbService.getCount();
+  public async getCount(searchTerm?: string) {
+    const count = await this.dbService.getCount(searchTerm);
     return plainToInstance(CountDto, { count });
   }
 
diff --git a/backend/src/inventory/device-type/device-type-db.service.spec.ts b/backend/src/inventory/device-type/device-type-db.service.spec.ts
index 22ae566..360f13b 100644
--- a/backend/src/inventory/device-type/device-type-db.service.spec.ts
+++ b/backend/src/inventory/device-type/device-type-db.service.spec.ts
@@ -102,7 +102,10 @@ describe('DeviceTypeDbService', () => {
       expect(repoMock.createQueryBuilder).toHaveBeenCalled();
       expect(repoMock.createQueryBuilder().limit).toHaveBeenCalledWith(10);
       expect(repoMock.createQueryBuilder().offset).toHaveBeenCalledWith(10);
-      expect(repoMock.createQueryBuilder().orderBy).toHaveBeenCalledWith('dt.name', 'ASC');
+      expect(repoMock.createQueryBuilder().orderBy).toHaveBeenCalledWith(
+        'dt.name',
+        'ASC',
+      );
       expect(repoMock.createQueryBuilder().getMany).toHaveBeenCalled();
     });
   });
diff --git a/backend/src/inventory/device-type/device-type-db.service.ts b/backend/src/inventory/device-type/device-type-db.service.ts
index 042c781..8edefe0 100644
--- a/backend/src/inventory/device-type/device-type-db.service.ts
+++ b/backend/src/inventory/device-type/device-type-db.service.ts
@@ -1,6 +1,6 @@
 import { Injectable } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
-import { Repository } from 'typeorm';
+import { Repository, SelectQueryBuilder } from 'typeorm';
 import { DeviceTypeEntity } from './device-type.entity';
 import { DeepPartial } from 'typeorm/common/DeepPartial';
 
@@ -11,8 +11,21 @@ export class DeviceTypeDbService {
     private readonly repo: Repository<DeviceTypeEntity>,
   ) {}
 
-  public async getCount() {
-    return this.repo.count();
+  private searchQueryBuilder(
+    query: SelectQueryBuilder<DeviceTypeEntity>,
+    searchTerm: string,
+  ): SelectQueryBuilder<DeviceTypeEntity> {
+    return query.where('dt.name ilike :searchTerm', {
+      searchTerm: `%${searchTerm}%`,
+    });
+  }
+
+  public async getCount(searchTerm?: string) {
+    let query = this.repo.createQueryBuilder('dt');
+    if (searchTerm) {
+      query = this.searchQueryBuilder(query, searchTerm);
+    }
+    return query.getCount();
   }
 
   public async findAll(
@@ -20,12 +33,17 @@ export class DeviceTypeDbService {
     limit?: number,
     sortCol?: string,
     sortDir?: 'ASC' | 'DESC',
+    searchTerm?: string,
   ) {
     let query = this.repo
       .createQueryBuilder('dt')
       .limit(limit ?? 100)
       .offset(offset ?? 0);
 
+    if (searchTerm) {
+      query = this.searchQueryBuilder(query, searchTerm);
+    }
+
     if (sortCol) {
       query = query.orderBy(`dt.${sortCol}`, sortDir ?? 'ASC');
     } else {
diff --git a/backend/src/inventory/device-type/device-type.controller.ts b/backend/src/inventory/device-type/device-type.controller.ts
index 2b21927..a0ac1af 100644
--- a/backend/src/inventory/device-type/device-type.controller.ts
+++ b/backend/src/inventory/device-type/device-type.controller.ts
@@ -12,6 +12,7 @@ import { DeviceTypeUpdateDto } from './dto/device-type-update.dto';
 import { DeviceTypeGetQueryDto } from './dto/device-type-get-query.dto';
 import { CountDto } from '../../shared/dto/count.dto';
 import { PaginationDto } from '../../shared/dto/pagination.dto';
+import { SearchDto } from '../../shared/dto/search.dto';
 
 @Controller('device-type')
 export class DeviceTypeController {
@@ -23,8 +24,8 @@ export class DeviceTypeController {
     responseType: CountDto,
     roles: [Role.DeviceTypeView],
   })
-  public getCount(): Promise<CountDto> {
-    return this.service.getCount();
+  public getCount(@Query() search: SearchDto): Promise<CountDto> {
+    return this.service.getCount(search.searchTerm);
   }
 
   @Endpoint(EndpointType.GET, {
@@ -36,12 +37,14 @@ export class DeviceTypeController {
   public async getAll(
     @Query() pagination: PaginationDto,
     @Query() querys: DeviceTypeGetQueryDto,
+    @Query() search: SearchDto,
   ): Promise<DeviceTypeDto[]> {
     return this.service.findAll(
       pagination.offset,
       pagination.limit,
       querys.sortCol,
       querys.sortDir,
+      search.searchTerm,
     );
   }
 
diff --git a/backend/src/inventory/device-type/device-type.service.ts b/backend/src/inventory/device-type/device-type.service.ts
index 6795e75..8f06bee 100644
--- a/backend/src/inventory/device-type/device-type.service.ts
+++ b/backend/src/inventory/device-type/device-type.service.ts
@@ -19,12 +19,14 @@ export class DeviceTypeService {
     limit?: number,
     sortCol?: string,
     sortDir?: 'ASC' | 'DESC',
+    searchTerm?: string,
   ) {
     const entities = await this.dbService.findAll(
       offset,
       limit,
       sortCol,
       sortDir,
+      searchTerm,
     );
     return plainToInstance(DeviceTypeDto, entities);
   }
@@ -43,8 +45,8 @@ export class DeviceTypeService {
     }
   }
 
-  public async getCount() {
-    const count = await this.dbService.getCount();
+  public async getCount(searchTerm?: string) {
+    const count = await this.dbService.getCount(searchTerm);
     return plainToInstance(CountDto, { count });
   }
 
diff --git a/backend/src/inventory/device/device-db.service.ts b/backend/src/inventory/device/device-db.service.ts
index 7c234b2..c82a4c6 100644
--- a/backend/src/inventory/device/device-db.service.ts
+++ b/backend/src/inventory/device/device-db.service.ts
@@ -1,6 +1,6 @@
 import { Injectable } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
-import { Repository } from 'typeorm';
+import { Repository, SelectQueryBuilder } from 'typeorm';
 import { DeepPartial } from 'typeorm/common/DeepPartial';
 import { DeviceEntity } from './device.entity';
 
@@ -11,8 +11,21 @@ export class DeviceDbService {
     private readonly repo: Repository<DeviceEntity>,
   ) {}
 
-  public async getCount() {
-    return this.repo.count();
+  private searchQueryBuilder(
+    query: SelectQueryBuilder<DeviceEntity>,
+    searchTerm: string,
+  ): SelectQueryBuilder<DeviceEntity> {
+    return query.where('d.name ilike :searchTerm', {
+      searchTerm: `%${searchTerm}%`,
+    });
+  }
+
+  public async getCount(searchTerm?: string) {
+    let query = this.repo.createQueryBuilder('d');
+    if (searchTerm) {
+      query = this.searchQueryBuilder(query, searchTerm);
+    }
+    return query.getCount();
   }
 
   public async findAll(
@@ -23,6 +36,7 @@ export class DeviceDbService {
     locationId?: number,
     sortCol?: string,
     sortDir?: 'ASC' | 'DESC',
+    searchTerm?: string,
   ) {
     let query = this.repo
       .createQueryBuilder('d')
@@ -33,6 +47,10 @@ export class DeviceDbService {
       .leftJoinAndSelect('d.location', 'l')
       .leftJoinAndSelect('l.parent', 'lp');
 
+    if (searchTerm) {
+      query = this.searchQueryBuilder(query, searchTerm);
+    }
+
     if (sortCol) {
       if (sortCol.startsWith('type.')) {
         query = query.orderBy(
diff --git a/backend/src/inventory/device/device.controller.ts b/backend/src/inventory/device/device.controller.ts
index d454719..2b1e6d3 100644
--- a/backend/src/inventory/device/device.controller.ts
+++ b/backend/src/inventory/device/device.controller.ts
@@ -12,6 +12,7 @@ import { DeviceGetQueryDto } from './dto/device-get-query.dto';
 import { DeviceUpdateDto } from './dto/device-update.dto';
 import { DeviceCreateDto } from './dto/device-create.dto';
 import { PaginationDto } from '../../shared/dto/pagination.dto';
+import { SearchDto } from '../../shared/dto/search.dto';
 
 @Controller('device')
 export class DeviceController {
@@ -23,8 +24,8 @@ export class DeviceController {
     responseType: CountDto,
     roles: [Role.DeviceView],
   })
-  public getCount(): Promise<CountDto> {
-    return this.service.getCount();
+  public getCount(@Query() search: SearchDto): Promise<CountDto> {
+    return this.service.getCount(search.searchTerm);
   }
 
   @Endpoint(EndpointType.GET, {
@@ -36,6 +37,7 @@ export class DeviceController {
   public async getAll(
     @Query() pagination: PaginationDto,
     @Query() querys: DeviceGetQueryDto,
+    @Query() search: SearchDto,
   ): Promise<DeviceDto[]> {
     return this.service.findAll(
       pagination.offset,
@@ -45,6 +47,7 @@ export class DeviceController {
       querys.locationId,
       querys.sortCol,
       querys.sortDir,
+      search.searchTerm,
     );
   }
 
diff --git a/backend/src/inventory/device/device.service.ts b/backend/src/inventory/device/device.service.ts
index c25d758..80e328e 100644
--- a/backend/src/inventory/device/device.service.ts
+++ b/backend/src/inventory/device/device.service.ts
@@ -22,6 +22,7 @@ export class DeviceService {
     locationId?: number,
     sortCol?: string,
     sortDir?: 'ASC' | 'DESC',
+    searchTerm?: string,
   ) {
     const entities = await this.dbService.findAll(
       offset,
@@ -31,6 +32,7 @@ export class DeviceService {
       locationId,
       sortCol,
       sortDir,
+      searchTerm,
     );
     return plainToInstance(DeviceDto, entities);
   }
@@ -49,8 +51,8 @@ export class DeviceService {
     }
   }
 
-  public async getCount() {
-    const count = await this.dbService.getCount();
+  public async getCount(searchTerm?: string) {
+    const count = await this.dbService.getCount(searchTerm);
     return plainToInstance(CountDto, { count });
   }
 
diff --git a/backend/src/shared/dto/search.dto.ts b/backend/src/shared/dto/search.dto.ts
new file mode 100644
index 0000000..e4b3836
--- /dev/null
+++ b/backend/src/shared/dto/search.dto.ts
@@ -0,0 +1,9 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { IsOptional, IsString } from 'class-validator';
+
+export class SearchDto {
+  @ApiProperty({ required: false })
+  @IsOptional()
+  @IsString()
+  searchTerm?: string;
+}
diff --git a/frontend/package.json b/frontend/package.json
index 8428ecd..2ed6266 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -7,7 +7,7 @@
     "build": "ng build",
     "watch": "ng build --watch --configuration development",
     "test": "ng test",
-    "generate:backend": "openapi-generator-cli generate -i ../openapi/backend.yml -g typescript-angular -o client/backend",
+    "generate:backend": "openapi-generator-cli generate -i ../openapi/backend.yml -g typescript-angular -o client/backend --additional-properties=useSingleRequestParameter=true",
     "lint": "ng lint"
   },
   "private": true,
@@ -50,4 +50,4 @@
     "typescript": "~5.7.2",
     "typescript-eslint": "8.27.0"
   }
-}
\ No newline at end of file
+}
diff --git a/frontend/src/app/app.config.ts b/frontend/src/app/app.config.ts
index 4fa21f2..856b897 100644
--- a/frontend/src/app/app.config.ts
+++ b/frontend/src/app/app.config.ts
@@ -21,6 +21,7 @@ import {authConfig} from './core/auth/auth-config';
 import {authModuleConfig} from './core/auth/auth-module-config';
 import {de as deDE} from 'date-fns/locale';
 import {registerLocaleData} from '@angular/common';
+import {provideAppConfigs} from './app.configs';
 
 registerLocaleData(de);
 
@@ -47,5 +48,6 @@ export const appConfig: ApplicationConfig = {
     importProvidersFrom(FormsModule),
     provideAnimationsAsync(),
     {provide: BASE_PATH, useValue: ''},
+    provideAppConfigs(),
   ]
 };
diff --git a/frontend/src/app/app.configs.ts b/frontend/src/app/app.configs.ts
new file mode 100644
index 0000000..5314b67
--- /dev/null
+++ b/frontend/src/app/app.configs.ts
@@ -0,0 +1,17 @@
+import {EnvironmentProviders, InjectionToken, makeEnvironmentProviders} from '@angular/core';
+
+export const SEARCH_DEBOUNCE_TIME = new InjectionToken<string>('SEARCH_DEBOUNCE_TIME');
+export const SELECT_ITEMS_COUNT = new InjectionToken<string>('SELECT_ITEMS_COUNT');
+
+export function provideAppConfigs(): EnvironmentProviders {
+  return makeEnvironmentProviders([
+    {
+      provide: SEARCH_DEBOUNCE_TIME,
+      useValue: 300,
+    },
+    {
+      provide: SELECT_ITEMS_COUNT,
+      useValue: 20,
+    },
+  ]);
+}
diff --git a/frontend/src/app/pages/administration/groups/group-create/group-create.service.ts b/frontend/src/app/pages/administration/groups/group-create/group-create.service.ts
index 9726fdb..e3d7231 100644
--- a/frontend/src/app/pages/administration/groups/group-create/group-create.service.ts
+++ b/frontend/src/app/pages/administration/groups/group-create/group-create.service.ts
@@ -18,7 +18,7 @@ export class GroupCreateService {
 
   create(rawValue: GroupCreateDto): void {
     this.createLoading.set(true);
-    this.groupService.groupControllerCreateGroup(rawValue)
+    this.groupService.groupControllerCreateGroup({groupCreateDto: rawValue})
       .subscribe({
         next: (group) => {
           this.createLoading.set(false);
diff --git a/frontend/src/app/pages/administration/groups/group-detail/group-detail.service.ts b/frontend/src/app/pages/administration/groups/group-detail/group-detail.service.ts
index 6e6a773..a0c3856 100644
--- a/frontend/src/app/pages/administration/groups/group-detail/group-detail.service.ts
+++ b/frontend/src/app/pages/administration/groups/group-detail/group-detail.service.ts
@@ -40,10 +40,10 @@ export class GroupDetailService {
     this.usersTransferLoading.set(true);
     this.rolesTransferLoading.set(true);
 
-    this.groupService.groupControllerGetGroup(id)
+    this.groupService.groupControllerGetGroup({id})
       .pipe(
         tap((group) => this.group.set(group)),
-        mergeMap(() => this.groupService.groupControllerGetMembers(id)),
+        mergeMap(() => this.groupService.groupControllerGetMembers({id})),
         tap((data) => this.users.set(data.users.map((user) => ({
           user,
           member: data.members.some(x => x.id === user.id)
@@ -82,7 +82,7 @@ export class GroupDetailService {
     const group = this.group();
     if (group) {
       this.updateLoading.set(true);
-      this.groupService.groupControllerUpdateGroup(group.id, rawValue)
+      this.groupService.groupControllerUpdateGroup({id: group.id, groupUpdateDto: rawValue})
         .subscribe({
           next: (group) => {
             this.updateLoading.set(false);
@@ -101,7 +101,7 @@ export class GroupDetailService {
     const group = this.group();
     if (group) {
       this.deleteLoading.set(true);
-      this.groupService.groupControllerDeleteGroup(group.id)
+      this.groupService.groupControllerDeleteGroup({id: group.id})
         .subscribe({
           next: () => {
             this.deleteLoading.set(false);
@@ -120,13 +120,13 @@ export class GroupDetailService {
     this.usersTransferLoading.set(true);
     from([users]).pipe(
       mergeMap((users) =>
-        forkJoin(users.map((user) => add ?
-          this.groupService.groupControllerAddMemberToGroup(this.group()!.id, user) :
-          this.groupService.groupControllerRemoveMemberFromGroup(this.group()!.id, user)))
+        forkJoin(users.map((userId) => add ?
+          this.groupService.groupControllerAddMemberToGroup({id: this.group()!.id, userId}) :
+          this.groupService.groupControllerRemoveMemberFromGroup({id: this.group()!.id, userId})))
       ),
-      mergeMap(() => this.groupService.groupControllerGetGroup(this.group()!.id)),
+      mergeMap(() => this.groupService.groupControllerGetGroup({id: this.group()!.id})),
       tap((group) => this.group.set(group)),
-      mergeMap(() => this.groupService.groupControllerGetMembers(this.group()!.id)),
+      mergeMap(() => this.groupService.groupControllerGetMembers({id: this.group()!.id})),
       tap((data) => this.users.set(data.users.map((user) => ({
         user,
         member: data.members.some(x => x.id === user.id)
@@ -148,10 +148,10 @@ export class GroupDetailService {
     from([roles]).pipe(
       mergeMap((roles) =>
         forkJoin(roles.map((role) => add ?
-          this.groupService.groupControllerAddRoleToGroup(this.group()!.id, role) :
-          this.groupService.groupControllerRemoveRoleFromGroup(this.group()!.id, role)))
+          this.groupService.groupControllerAddRoleToGroup({id: this.group()!.id, role}) :
+          this.groupService.groupControllerRemoveRoleFromGroup({id: this.group()!.id, role})))
       ),
-      mergeMap(() => this.groupService.groupControllerGetGroup(this.group()!.id)),
+      mergeMap(() => this.groupService.groupControllerGetGroup({id: this.group()!.id})),
       tap((group) => this.group.set(group)),
       mergeMap(() => this.groupService.groupControllerGetRoles()),
       tap((data) => this.roles.set(data.map((role) => ({
diff --git a/frontend/src/app/pages/administration/groups/groups.service.ts b/frontend/src/app/pages/administration/groups/groups.service.ts
index 6aabf46..20c11c0 100644
--- a/frontend/src/app/pages/administration/groups/groups.service.ts
+++ b/frontend/src/app/pages/administration/groups/groups.service.ts
@@ -20,7 +20,10 @@ export class GroupsService {
     this.groupsLoading.set(true);
     this.groupService.groupControllerGetCount()
       .subscribe((count) => this.total.set(count.count));
-    this.groupService.groupControllerGetGroups(this.itemsPerPage(), this.page() * this.itemsPerPage())
+    this.groupService.groupControllerGetGroups({
+      limit: this.itemsPerPage(),
+      offset: this.page() * this.itemsPerPage(),
+    })
       .subscribe({
         next: (groups) => {
           this.groups.set(groups);
diff --git a/frontend/src/app/pages/administration/users/user-create/user-create.service.ts b/frontend/src/app/pages/administration/users/user-create/user-create.service.ts
index 042861e..4393031 100644
--- a/frontend/src/app/pages/administration/users/user-create/user-create.service.ts
+++ b/frontend/src/app/pages/administration/users/user-create/user-create.service.ts
@@ -18,7 +18,7 @@ export class UserCreateService {
 
   create(rawValue: UserCreateDto) {
     this.createLoading.set(true);
-    this.userService.userControllerCreateUser(rawValue)
+    this.userService.userControllerCreateUser({userCreateDto: rawValue})
       .subscribe({
         next: (user) => {
           this.createLoading.set(false);
diff --git a/frontend/src/app/pages/administration/users/user-detail/user-detail.service.ts b/frontend/src/app/pages/administration/users/user-detail/user-detail.service.ts
index 46fb7b4..9fb9158 100644
--- a/frontend/src/app/pages/administration/users/user-detail/user-detail.service.ts
+++ b/frontend/src/app/pages/administration/users/user-detail/user-detail.service.ts
@@ -34,10 +34,10 @@ export class UserDetailService {
 
   load(id: string) {
     this.loading.set(true);
-    this.userService.userControllerGetUser(id)
+    this.userService.userControllerGetUser({id})
       .pipe(
         tap((user) => this.user.set(user)),
-        mergeMap(() => this.userService.userControllerGetGroups(id)),
+        mergeMap(() => this.userService.userControllerGetGroups({id})),
         tap((data) => this.groups.set(data.groups.map((group) => ({
           group,
           member: data.members.some(x => x.id === group.id)
@@ -63,7 +63,7 @@ export class UserDetailService {
     const user = this.user();
     if (user) {
       this.updateLoading.set(true);
-      this.userService.userControllerUpdateUser(user.id, rawValue)
+      this.userService.userControllerUpdateUser({id: user.id, userUpdateDto: rawValue})
         .subscribe({
           next: (user) => {
             this.updateLoading.set(false);
@@ -82,13 +82,13 @@ export class UserDetailService {
     this.groupsTransferLoading.set(true);
     from([groups]).pipe(
       mergeMap((users) =>
-        forkJoin(users.map((group) => add ?
-          this.userService.userControllerAddUserToGroup(this.user()!.id, group) :
-          this.userService.userControllerRemoveUserFromGroup(this.user()!.id, group)))
+        forkJoin(users.map((groupId) => add ?
+          this.userService.userControllerAddUserToGroup({id: this.user()!.id, groupId}) :
+          this.userService.userControllerRemoveUserFromGroup({id: this.user()!.id, groupId})))
       ),
-      mergeMap(() => this.userService.userControllerGetUser(this.user()!.id)),
+      mergeMap(() => this.userService.userControllerGetUser({id: this.user()!.id})),
       tap((user) => this.user.set(user)),
-      mergeMap(() => this.userService.userControllerGetGroups(this.user()!.id)),
+      mergeMap(() => this.userService.userControllerGetGroups({id: this.user()!.id})),
       tap((data) => this.groups.set(data.groups.map((group) => ({
         group,
         member: data.members.some(x => x.id === group.id)
@@ -109,7 +109,7 @@ export class UserDetailService {
     const user = this.user();
     if (user) {
       this.deleteLoading.set(true);
-      this.userService.userControllerDeleteUser(user.id)
+      this.userService.userControllerDeleteUser({id: user.id})
         .subscribe({
           next: () => {
             this.deleteLoading.set(false);
diff --git a/frontend/src/app/pages/administration/users/users.service.ts b/frontend/src/app/pages/administration/users/users.service.ts
index 818be30..dd97ea4 100644
--- a/frontend/src/app/pages/administration/users/users.service.ts
+++ b/frontend/src/app/pages/administration/users/users.service.ts
@@ -20,7 +20,10 @@ export class UsersService {
     this.usersLoading.set(true);
     this.userService.userControllerGetCount()
       .subscribe((count) => this.total.set(count.count));
-    this.userService.userControllerGetUsers(this.itemsPerPage(), this.page() * this.itemsPerPage())
+    this.userService.userControllerGetUsers({
+      limit: this.itemsPerPage(),
+      offset: this.page() * this.itemsPerPage(),
+    })
       .subscribe({
         next: (users) => {
           this.users.set(users);
diff --git a/frontend/src/app/pages/base/locations/location-create/location-create.component.html b/frontend/src/app/pages/base/locations/location-create/location-create.component.html
index 2658401..3f1ba83 100644
--- a/frontend/src/app/pages/base/locations/location-create/location-create.component.html
+++ b/frontend/src/app/pages/base/locations/location-create/location-create.component.html
@@ -49,21 +49,22 @@ <h1>Ort/Fahrzeug erstellen</h1>
   <nz-form-item>
     <nz-form-label [nzSpan]="7">Übergeordneter Ort/Fahrzeug</nz-form-label>
     <nz-form-control [nzSpan]="12">
+
       <nz-select
-        (nzScrollToBottom)="loadMore()"
+        (nzOnSearch)="onSearchParent($event)"
         formControlName="parentId"
         nzPlaceHolder="Ort/Fahrzeug auswählen"
         nzAllowClear
-        [nzDropdownRender]="renderTemplate">
-        @for (item of parents(); track item) {
-          <nz-option [nzValue]="item.id" [nzLabel]="(item.parent? item.parent.name+' -> ':'') + item.name"></nz-option>
-        }
-      </nz-select>
-      <ng-template #renderTemplate>
+        nzShowSearch
+        nzServerSearch>
         @if (parentsIsLoading()) {
           <nz-spin></nz-spin>
+        } @else {
+          @for (item of parents(); track item) {
+            <nz-option [nzValue]="item.id" [nzLabel]="item.name"></nz-option>
+          }
         }
-      </ng-template>
+      </nz-select>
     </nz-form-control>
   </nz-form-item>
 
diff --git a/frontend/src/app/pages/base/locations/location-create/location-create.component.ts b/frontend/src/app/pages/base/locations/location-create/location-create.component.ts
index bc070fe..9faae41 100644
--- a/frontend/src/app/pages/base/locations/location-create/location-create.component.ts
+++ b/frontend/src/app/pages/base/locations/location-create/location-create.component.ts
@@ -1,4 +1,4 @@
-import {Component, OnDestroy, OnInit, Signal} from '@angular/core';
+import {Component, OnDestroy, Signal} from '@angular/core';
 import {FormControl, FormGroup, ReactiveFormsModule, Validators} from '@angular/forms';
 import {NzButtonModule} from 'ng-zorro-antd/button';
 import {NzFormModule} from 'ng-zorro-antd/form';
@@ -26,7 +26,7 @@ interface LocationCreateForm {
   templateUrl: './location-create.component.html',
   styleUrl: './location-create.component.less'
 })
-export class LocationCreateComponent implements OnDestroy, OnInit {
+export class LocationCreateComponent implements OnDestroy {
   types = LocationTypes.all;
 
   parentsIsLoading: Signal<boolean>;
@@ -52,35 +52,30 @@ export class LocationCreateComponent implements OnDestroy, OnInit {
   private destroy$ = new Subject<void>();
 
   constructor(
-    private readonly locationCreateService: LocationCreateService,
+    private readonly service: LocationCreateService,
     private readonly inAppMessagingService: InAppMessageService
   ) {
-    this.createLoading = this.locationCreateService.createLoading;
-    this.parentsIsLoading = this.locationCreateService.parentsIsLoading;
-    this.parents = this.locationCreateService.parents;
+    this.createLoading = this.service.createLoading;
+    this.parentsIsLoading = this.service.parentsIsLoading;
+    this.parents = this.service.parents;
 
-    this.locationCreateService.createLoadingError
+    this.service.createLoadingError
       .pipe(takeUntil(this.destroy$))
       .subscribe((x) => this.inAppMessagingService.showError(x));
-    this.locationCreateService.createLoadingSuccess
+    this.service.createLoadingSuccess
       .pipe(takeUntil(this.destroy$))
       .subscribe(() => this.inAppMessagingService.showSuccess('Änderungen gespeichert'));
   }
 
-
-  ngOnInit(): void {
-    this.locationCreateService.loadParents(true);
-  }
-
   submit() {
-    this.locationCreateService.create(this.form.getRawValue());
-  }
-
-  loadMore() {
-    this.locationCreateService.loadParents();
+    this.service.create(this.form.getRawValue());
   }
 
   ngOnDestroy(): void {
     this.destroy$.next();
   }
+
+  onSearchParent(search: string) {
+    this.service.onSearchParent(search);
+  }
 }
diff --git a/frontend/src/app/pages/base/locations/location-create/location-create.service.ts b/frontend/src/app/pages/base/locations/location-create/location-create.service.ts
index 51ff2e8..65e342d 100644
--- a/frontend/src/app/pages/base/locations/location-create/location-create.service.ts
+++ b/frontend/src/app/pages/base/locations/location-create/location-create.service.ts
@@ -1,10 +1,11 @@
-import {Injectable, signal} from '@angular/core';
-import {Subject} from 'rxjs';
+import {Inject, Injectable, signal} from '@angular/core';
+import {BehaviorSubject, debounceTime, filter, Subject} from 'rxjs';
 import {Router} from '@angular/router';
 import {HttpErrorResponse} from '@angular/common/http';
 import {LocationService} from '@backend/api/location.service';
 import {LocationCreateDto} from '@backend/model/locationCreateDto';
 import {LocationDto} from '@backend/model/locationDto';
+import {SEARCH_DEBOUNCE_TIME, SELECT_ITEMS_COUNT} from '../../../../app.configs';
 
 @Injectable({
   providedIn: 'root'
@@ -16,15 +17,27 @@ export class LocationCreateService {
   parentsIsLoading = signal(false);
   parents = signal<LocationDto[]>([]);
 
-  private parentsPage = 0;
-  private parentsItemsPerPage = 10;
+  parentsSearch$ = new BehaviorSubject<{ propagate: boolean; value: string }>({propagate: false, value: ''});
+  parentsSearch = '';
 
-  constructor(private readonly locationService: LocationService, private readonly router: Router) {
+  constructor(
+    private readonly locationService: LocationService,
+    private readonly router: Router,
+    @Inject(SEARCH_DEBOUNCE_TIME) time: number,
+    @Inject(SELECT_ITEMS_COUNT) private readonly selectCount: number,
+  ) {
+    this.parentsSearch$.pipe(
+      filter(x => x.propagate),
+      debounceTime(time),
+    ).subscribe((x) => {
+      this.parentsSearch = x.value;
+      this.loadParents();
+    });
   }
 
   create(rawValue: LocationCreateDto) {
     this.createLoading.set(true);
-    this.locationService.locationControllerCreate(rawValue)
+    this.locationService.locationControllerCreate({locationCreateDto: rawValue})
       .subscribe({
         next: (entity) => {
           this.createLoading.set(false);
@@ -38,29 +51,26 @@ export class LocationCreateService {
       });
   }
 
-  loadParents(init = false) {
-    if (init) {
-      this.parentsPage = 0;
-      this.parents.set([]);
-    }
+  loadParents() {
     this.parentsIsLoading.set(true);
     this.locationService
-      .locationControllerGetAll(this.parentsItemsPerPage, this.parentsPage * this.parentsItemsPerPage)
+      .locationControllerGetAll({
+        searchTerm: this.parentsSearch,
+        limit: this.selectCount,
+      })
       .subscribe({
         next: (parents) => {
           this.parentsIsLoading.set(false);
-          const newParents = [
-            ...this.parents(),
-            ...parents,
-          ];
-          this.parents.set(newParents);
-          this.parentsPage += 1;
+          this.parents.set(parents);
         },
         error: () => {
           this.parentsIsLoading.set(false);
           this.parents.set([]);
-          this.parentsPage = 0;
         }
       });
   }
+
+  onSearchParent(value: string): void {
+    this.parentsSearch$.next({propagate: true, value});
+  }
 }
diff --git a/frontend/src/app/pages/base/locations/location-detail/location-detail.component.html b/frontend/src/app/pages/base/locations/location-detail/location-detail.component.html
index 1cb0c60..ef62839 100644
--- a/frontend/src/app/pages/base/locations/location-detail/location-detail.component.html
+++ b/frontend/src/app/pages/base/locations/location-detail/location-detail.component.html
@@ -61,21 +61,20 @@ <h1>Der Ort/Fahrzeug wurde nicht gefunden!</h1>
       <nz-form-label [nzSpan]="7">Übergeordneter Ort/Fahrzeug</nz-form-label>
       <nz-form-control [nzSpan]="12">
         <nz-select
-          (nzScrollToBottom)="loadMore()"
+          (nzOnSearch)="onSearchParent($event)"
           formControlName="parentId"
           nzPlaceHolder="Ort/Fahrzeug auswählen"
           nzAllowClear
-          [nzDropdownRender]="renderTemplate">
-          @for (item of parents(); track item) {
-            <nz-option [nzValue]="item.id"
-                       [nzLabel]="(item.parent? item.parent.name+' -> ':'') + item.name"></nz-option>
-          }
-        </nz-select>
-        <ng-template #renderTemplate>
+          nzShowSearch
+          nzServerSearch>
           @if (parentsIsLoading()) {
             <nz-spin></nz-spin>
+          } @else {
+            @for (item of parents(); track item) {
+              <nz-option [nzValue]="item.id" [nzLabel]="item.name"></nz-option>
+            }
           }
-        </ng-template>
+        </nz-select>
       </nz-form-control>
     </nz-form-item>
 
diff --git a/frontend/src/app/pages/base/locations/location-detail/location-detail.component.ts b/frontend/src/app/pages/base/locations/location-detail/location-detail.component.ts
index 1419c45..911a821 100644
--- a/frontend/src/app/pages/base/locations/location-detail/location-detail.component.ts
+++ b/frontend/src/app/pages/base/locations/location-detail/location-detail.component.ts
@@ -60,39 +60,39 @@ export class LocationDetailComponent implements OnInit, OnDestroy {
 
   constructor(
     private readonly activatedRoute: ActivatedRoute,
-    private readonly locationDetailService: LocationDetailService,
+    private readonly service: LocationDetailService,
     private readonly inAppMessagingService: InAppMessageService,
   ) {
-    this.notFound = this.locationDetailService.notFound;
-    this.loading = this.locationDetailService.loading;
-    this.loadingError = this.locationDetailService.loadingError;
-    this.deleteLoading = this.locationDetailService.deleteLoading;
-    this.updateLoading = this.locationDetailService.updateLoading;
-    this.parentsIsLoading = this.locationDetailService.parentsIsLoading;
-    this.parents = this.locationDetailService.parents;
+    this.notFound = this.service.notFound;
+    this.loading = this.service.loading;
+    this.loadingError = this.service.loadingError;
+    this.deleteLoading = this.service.deleteLoading;
+    this.updateLoading = this.service.updateLoading;
+    this.parentsIsLoading = this.service.parentsIsLoading;
+    this.parents = this.service.parents;
 
     effect(() => {
-      const location = this.locationDetailService.location();
+      const location = this.service.location();
       if (location) this.form.patchValue(location);
     });
 
     effect(() => {
-      const updateLoading = this.locationDetailService.loadingError();
+      const updateLoading = this.service.loadingError();
       if (updateLoading) {
         this.inAppMessagingService.showError('Fehler beim laden des Orts/Fahrzeugs.');
       }
     });
 
-    this.locationDetailService.deleteLoadingError
+    this.service.deleteLoadingError
       .pipe(takeUntil(this.destroy$))
       .subscribe((x) => this.inAppMessagingService.showError(x));
-    this.locationDetailService.deleteLoadingSuccess
+    this.service.deleteLoadingSuccess
       .pipe(takeUntil(this.destroy$))
       .subscribe(() => this.inAppMessagingService.showSuccess('Ort/Fahrzeug gelöscht'));
-    this.locationDetailService.updateLoadingError
+    this.service.updateLoadingError
       .pipe(takeUntil(this.destroy$))
       .subscribe(() => this.inAppMessagingService.showError('Fehler beim speichern.'));
-    this.locationDetailService.updateLoadingSuccess
+    this.service.updateLoadingSuccess
       .pipe(takeUntil(this.destroy$))
       .subscribe(() => this.inAppMessagingService.showSuccess('Änderungen gespeichert'));
   }
@@ -104,19 +104,19 @@ export class LocationDetailComponent implements OnInit, OnDestroy {
 
   ngOnInit(): void {
     this.activatedRoute.params.subscribe(params => {
-      this.locationDetailService.load(params['id']);
+      this.service.load(params['id']);
     });
   }
 
   submit() {
-    this.locationDetailService.update(this.form.getRawValue());
+    this.service.update(this.form.getRawValue());
   }
 
   delete() {
-    this.locationDetailService.delete();
+    this.service.delete();
   }
 
-  loadMore() {
-    this.locationDetailService.loadParents();
+  onSearchParent(search: string) {
+    this.service.onSearchParent(search);
   }
 }
diff --git a/frontend/src/app/pages/base/locations/location-detail/location-detail.service.ts b/frontend/src/app/pages/base/locations/location-detail/location-detail.service.ts
index d11f31e..5411409 100644
--- a/frontend/src/app/pages/base/locations/location-detail/location-detail.service.ts
+++ b/frontend/src/app/pages/base/locations/location-detail/location-detail.service.ts
@@ -1,10 +1,11 @@
-import {Injectable, signal} from '@angular/core';
-import {Subject} from 'rxjs';
+import {Inject, Injectable, signal} from '@angular/core';
+import {BehaviorSubject, debounceTime, filter, Subject} from 'rxjs';
 import {Router} from '@angular/router';
 import {HttpErrorResponse} from '@angular/common/http';
 import {LocationDto} from '@backend/model/locationDto';
 import {LocationService} from '@backend/api/location.service';
 import {LocationUpdateDto} from '@backend/model/locationUpdateDto';
+import {SEARCH_DEBOUNCE_TIME, SELECT_ITEMS_COUNT} from '../../../../app.configs';
 
 @Injectable({
   providedIn: 'root'
@@ -24,21 +25,28 @@ export class LocationDetailService {
   updateLoadingSuccess = new Subject<void>();
   deleteLoadingSuccess = new Subject<void>();
 
-  private parentsPage = 0;
-  private parentsItemsPerPage = 10;
+  parentsSearch$ = new BehaviorSubject<{ propagate: boolean; value: string }>({propagate: false, value: ''});
+  parentsSearch = '';
 
   constructor(
     private readonly locationService: LocationService,
     private readonly router: Router,
+    @Inject(SEARCH_DEBOUNCE_TIME) time: number,
+    @Inject(SELECT_ITEMS_COUNT) private readonly selectCount: number,
   ) {
+    this.parentsSearch$.pipe(
+      filter(x => x.propagate),
+      debounceTime(time),
+    ).subscribe((x) => {
+      this.parentsSearch = x.value;
+      this.loadParents();
+    });
   }
 
   load(id: number) {
     this.id = id;
-    this.parentsPage = 0;
-    this.parents.set([]);
     this.loading.set(true);
-    this.locationService.locationControllerGetOne(id)
+    this.locationService.locationControllerGetOne({id})
       .subscribe({
         next: (newEntity) => {
           this.location.set(newEntity);
@@ -47,7 +55,6 @@ export class LocationDetailService {
           if (newEntity.parent) {
             this.parents.set([newEntity.parent]);
           }
-          this.loadParents();
         },
         error: (err: HttpErrorResponse) => {
           if (err.status === 404) {
@@ -57,7 +64,6 @@ export class LocationDetailService {
           this.loadingError.set(true);
           this.loading.set(false);
           this.parents.set([]);
-          this.parentsPage = 0;
         }
       })
   }
@@ -66,7 +72,7 @@ export class LocationDetailService {
     const entity = this.location();
     if (entity) {
       this.updateLoading.set(true);
-      this.locationService.locationControllerUpdate(entity.id, rawValue)
+      this.locationService.locationControllerUpdate({id: entity.id, locationUpdateDto: rawValue})
         .subscribe({
           next: (newEntity) => {
             this.updateLoading.set(false);
@@ -85,7 +91,7 @@ export class LocationDetailService {
     const entity = this.location();
     if (entity) {
       this.deleteLoading.set(true);
-      this.locationService.locationControllerDelete(entity.id)
+      this.locationService.locationControllerDelete({id: entity.id})
         .subscribe({
           next: () => {
             this.deleteLoading.set(false);
@@ -103,22 +109,23 @@ export class LocationDetailService {
   loadParents() {
     this.parentsIsLoading.set(true);
     this.locationService
-      .locationControllerGetAll(this.parentsItemsPerPage, this.parentsPage * this.parentsItemsPerPage)
+      .locationControllerGetAll({
+        searchTerm: this.parentsSearch,
+        limit: this.selectCount,
+      })
       .subscribe({
         next: (parents) => {
           this.parentsIsLoading.set(false);
-          const newParents = [
-            ...this.parents(),
-            ...parents.filter(x => x.id != this.location()?.parentId && x.id != this.id),
-          ];
-          this.parents.set(newParents);
-          this.parentsPage += 1;
+          this.parents.set(parents.filter(x => x.id !== this.location()?.id));
         },
         error: () => {
           this.parentsIsLoading.set(false);
           this.parents.set([]);
-          this.parentsPage = 0;
         }
       });
   }
+
+  onSearchParent(value: string): void {
+    this.parentsSearch$.next({propagate: true, value});
+  }
 }
diff --git a/frontend/src/app/pages/base/locations/locations.component.html b/frontend/src/app/pages/base/locations/locations.component.html
index c9c2a03..6bea5a5 100644
--- a/frontend/src/app/pages/base/locations/locations.component.html
+++ b/frontend/src/app/pages/base/locations/locations.component.html
@@ -1,3 +1,15 @@
 <h1>Orte/Fahrzeuge</h1>
-<button nz-button nzType="primary" routerLink="create" *ofsHasRole="['location.manage']">Ort/Fahrzeug anlegen</button>
+<div nz-row nzJustify="space-between">
+  <div nz-col>
+    <button nz-button nzType="primary" routerLink="create" *ofsHasRole="['location.manage']">Ort/Fahrzeug anlegen</button>
+  </div>
+  <div nz-col>
+    <nz-input-group [nzSuffix]="suffixIconSearch">
+      <input type="text" (input)="search($event)" nz-input placeholder="Suchen"/>
+    </nz-input-group>
+    <ng-template #suffixIconSearch>
+      <nz-icon nzType="search" />
+    </ng-template>
+  </div>
+</div>
 <ofs-location-list></ofs-location-list>
diff --git a/frontend/src/app/pages/base/locations/locations.component.ts b/frontend/src/app/pages/base/locations/locations.component.ts
index 65b0f01..fee3830 100644
--- a/frontend/src/app/pages/base/locations/locations.component.ts
+++ b/frontend/src/app/pages/base/locations/locations.component.ts
@@ -1,8 +1,12 @@
-import {Component} from '@angular/core';
+import {Component, OnInit} from '@angular/core';
 import {HasRoleDirective} from '../../../core/auth/has-role.directive';
 import {NzButtonModule} from 'ng-zorro-antd/button';
 import {RouterLink} from '@angular/router';
 import {LocationListComponent} from './location-list/location-list.component';
+import {NzGridModule} from 'ng-zorro-antd/grid';
+import {NzInputModule} from 'ng-zorro-antd/input';
+import {NzIconModule} from 'ng-zorro-antd/icon';
+import {LocationsService} from './locations.service';
 
 @Component({
   selector: 'ofs-locations',
@@ -11,10 +15,24 @@ import {LocationListComponent} from './location-list/location-list.component';
     RouterLink,
     LocationListComponent,
     NzButtonModule,
+    NzGridModule,
+    NzInputModule,
+    NzIconModule,
   ],
   templateUrl: './locations.component.html',
   styleUrl: './locations.component.less'
 })
-export class LocationsComponent {
+export class LocationsComponent implements OnInit {
 
+  constructor(private readonly service: LocationsService) {
+  }
+
+  search($event: Event) {
+    const target = $event.target as HTMLInputElement;
+    this.service.search(target.value);
+  }
+
+  ngOnInit(): void {
+    this.service.init();
+  }
 }
diff --git a/frontend/src/app/pages/base/locations/locations.service.ts b/frontend/src/app/pages/base/locations/locations.service.ts
index a289a85..2daf251 100644
--- a/frontend/src/app/pages/base/locations/locations.service.ts
+++ b/frontend/src/app/pages/base/locations/locations.service.ts
@@ -1,6 +1,8 @@
-import {Injectable, signal} from '@angular/core';
+import {Inject, Injectable, signal} from '@angular/core';
 import {LocationDto} from '@backend/model/locationDto';
 import {LocationService} from '@backend/api/location.service';
+import {BehaviorSubject, debounceTime, distinctUntilChanged, filter} from 'rxjs';
+import {SEARCH_DEBOUNCE_TIME} from '../../../app.configs';
 
 @Injectable({
   providedIn: 'root'
@@ -14,15 +16,37 @@ export class LocationsService {
   locationsLoadError = signal(false);
   sortCol?: string;
   sortDir?: string;
+  searchTerm$ = new BehaviorSubject<{ propagate: boolean, value: string }>({propagate: true, value: ''});
+  private searchTerm?: string;
 
-  constructor(private readonly locationService: LocationService) {
+
+  constructor(
+    private readonly locationService: LocationService,
+    @Inject(SEARCH_DEBOUNCE_TIME) time: number,
+  ) {
+    this.searchTerm$
+      .pipe(
+        filter(x => x.propagate),
+        debounceTime(time),
+        distinctUntilChanged(),
+      )
+      .subscribe(term => {
+        this.searchTerm = term.value;
+        this.load();
+      });
   }
 
   load() {
     this.locationsLoading.set(true);
-    this.locationService.locationControllerGetCount()
+    this.locationService.locationControllerGetCount({searchTerm: this.searchTerm})
       .subscribe((count) => this.total.set(count.count));
-    this.locationService.locationControllerGetAll(this.itemsPerPage, (this.page - 1) * this.itemsPerPage, this.sortCol, this.sortDir)
+    this.locationService.locationControllerGetAll({
+      limit: this.itemsPerPage,
+      offset: (this.page - 1) * this.itemsPerPage,
+      sortCol: this.sortCol,
+      sortDir: this.sortDir,
+      searchTerm: this.searchTerm
+    })
       .subscribe({
         next: (users) => {
           this.locations.set(users);
@@ -44,4 +68,14 @@ export class LocationsService {
     this.sortDir = this.sortCol ? sortDir : undefined;
     this.load();
   }
+
+  search(term: string) {
+    this.searchTerm$.next({propagate: true, value: term});
+    this.page = 1;
+  }
+
+  init() {
+    this.searchTerm = '';
+    this.searchTerm$.next({propagate: false, value: ''});
+  }
 }
diff --git a/frontend/src/app/pages/inventory/device-groups/device-group-create/device-group-create.service.ts b/frontend/src/app/pages/inventory/device-groups/device-group-create/device-group-create.service.ts
index 41cdbc9..5f3df7d 100644
--- a/frontend/src/app/pages/inventory/device-groups/device-group-create/device-group-create.service.ts
+++ b/frontend/src/app/pages/inventory/device-groups/device-group-create/device-group-create.service.ts
@@ -9,7 +9,7 @@ import {HttpErrorResponse} from '@angular/common/http';
   providedIn: 'root'
 })
 export class DeviceGroupCreateService {
-createLoading = signal(false);
+  createLoading = signal(false);
   createLoadingError = new Subject<string>();
   createLoadingSuccess = new Subject<void>();
 
@@ -21,7 +21,7 @@ createLoading = signal(false);
 
   create(rawValue: DeviceGroupCreateDto) {
     this.createLoading.set(true);
-    this.apiService.deviceGroupControllerCreate(rawValue)
+    this.apiService.deviceGroupControllerCreate({deviceGroupCreateDto: rawValue})
       .subscribe({
         next: (entity) => {
           this.createLoading.set(false);
diff --git a/frontend/src/app/pages/inventory/device-groups/device-group-detail/device-group-detail.service.ts b/frontend/src/app/pages/inventory/device-groups/device-group-detail/device-group-detail.service.ts
index 0e2bd67..912b548 100644
--- a/frontend/src/app/pages/inventory/device-groups/device-group-detail/device-group-detail.service.ts
+++ b/frontend/src/app/pages/inventory/device-groups/device-group-detail/device-group-detail.service.ts
@@ -31,7 +31,7 @@ export class DeviceGroupDetailService {
   load(id: number) {
     this.id = id;
     this.loading.set(true);
-    this.locationService.deviceGroupControllerGetOne(id)
+    this.locationService.deviceGroupControllerGetOne({id})
       .subscribe({
         next: (newEntity) => {
           this.entity.set(newEntity);
@@ -53,7 +53,7 @@ export class DeviceGroupDetailService {
     const entity = this.entity();
     if (entity) {
       this.updateLoading.set(true);
-      this.locationService.deviceGroupControllerUpdate(entity.id, rawValue)
+      this.locationService.deviceGroupControllerUpdate({id: entity.id, deviceGroupUpdateDto: rawValue})
         .subscribe({
           next: (newEntity) => {
             this.updateLoading.set(false);
@@ -72,7 +72,7 @@ export class DeviceGroupDetailService {
     const entity = this.entity();
     if (entity) {
       this.deleteLoading.set(true);
-      this.locationService.deviceGroupControllerDelete(entity.id)
+      this.locationService.deviceGroupControllerDelete({id: entity.id})
         .subscribe({
           next: () => {
             this.deleteLoading.set(false);
diff --git a/frontend/src/app/pages/inventory/device-groups/device-groups.component.html b/frontend/src/app/pages/inventory/device-groups/device-groups.component.html
index b76a791..7dae087 100644
--- a/frontend/src/app/pages/inventory/device-groups/device-groups.component.html
+++ b/frontend/src/app/pages/inventory/device-groups/device-groups.component.html
@@ -1,3 +1,17 @@
 <h1>Geräte-Gruppen</h1>
-<button nz-button nzType="primary" routerLink="create" *ofsHasRole="['device-group.manage']">Geräte-Gruppe anlegen</button>
+<div nz-row nzJustify="space-between">
+  <div nz-col>
+    <button nz-button nzType="primary" routerLink="create" *ofsHasRole="['device-group.manage']">Geräte-Gruppe
+      anlegen
+    </button>
+  </div>
+  <div nz-col>
+    <nz-input-group [nzSuffix]="suffixIconSearch">
+      <input type="text" (input)="search($event)" nz-input placeholder="Suchen"/>
+    </nz-input-group>
+    <ng-template #suffixIconSearch>
+      <nz-icon nzType="search"/>
+    </ng-template>
+  </div>
+</div>
 <ofs-device-group-list></ofs-device-group-list>
diff --git a/frontend/src/app/pages/inventory/device-groups/device-groups.component.ts b/frontend/src/app/pages/inventory/device-groups/device-groups.component.ts
index 22fd44c..0335f9d 100644
--- a/frontend/src/app/pages/inventory/device-groups/device-groups.component.ts
+++ b/frontend/src/app/pages/inventory/device-groups/device-groups.component.ts
@@ -1,23 +1,40 @@
-import { Component } from '@angular/core';
+import {Component, OnInit} from '@angular/core';
 import {HasRoleDirective} from '../../../core/auth/has-role.directive';
-import {NzButtonComponent} from 'ng-zorro-antd/button';
+import {NzButtonModule} from 'ng-zorro-antd/button';
 import {NzWaveDirective} from 'ng-zorro-antd/core/wave';
 import {RouterLink} from '@angular/router';
 import {DeviceGroupListComponent} from './device-group-list/device-group-list.component';
+import {NzGridModule} from 'ng-zorro-antd/grid';
+import {NzInputModule} from 'ng-zorro-antd/input';
+import {NzIconModule} from 'ng-zorro-antd/icon';
+import {DeviceGroupsService} from './device-groups.service';
 
 @Component({
   selector: 'ofs-device-groups',
   imports: [
     HasRoleDirective,
-    NzButtonComponent,
     NzWaveDirective,
     RouterLink,
-    DeviceGroupListComponent
+    DeviceGroupListComponent,
+    NzButtonModule,
+    NzGridModule,
+    NzInputModule,
+    NzIconModule,
   ],
   standalone: true,
   templateUrl: './device-groups.component.html',
   styleUrl: './device-groups.component.less'
 })
-export class DeviceGroupsComponent {
+export class DeviceGroupsComponent implements OnInit {
+  constructor(private service: DeviceGroupsService) {
+  }
 
+  search($event: Event) {
+    const target = $event.target as HTMLInputElement;
+    this.service.search(target.value);
+  }
+
+  ngOnInit(): void {
+    this.service.init();
+  }
 }
diff --git a/frontend/src/app/pages/inventory/device-groups/device-groups.service.ts b/frontend/src/app/pages/inventory/device-groups/device-groups.service.ts
index 71b5b52..ad13c3b 100644
--- a/frontend/src/app/pages/inventory/device-groups/device-groups.service.ts
+++ b/frontend/src/app/pages/inventory/device-groups/device-groups.service.ts
@@ -1,6 +1,8 @@
-import {Injectable, signal} from '@angular/core';
+import {Inject, Injectable, signal} from '@angular/core';
 import {DeviceGroupDto} from '@backend/model/deviceGroupDto';
 import {DeviceGroupService} from '@backend/api/deviceGroup.service';
+import {BehaviorSubject, debounceTime, distinctUntilChanged, filter} from 'rxjs';
+import {SEARCH_DEBOUNCE_TIME} from '../../../app.configs';
 
 @Injectable({
   providedIn: 'root'
@@ -14,15 +16,35 @@ export class DeviceGroupsService {
   entitiesLoadError = signal(false);
   sortCol?: string;
   sortDir?: string;
+  searchTerm$ = new BehaviorSubject<{ propagate: boolean, value: string }>({propagate: true, value: ''});
+  private searchTerm?: string;
 
-  constructor(private readonly apiService: DeviceGroupService) {
+  constructor(private readonly apiService: DeviceGroupService,
+              @Inject(SEARCH_DEBOUNCE_TIME) time: number,
+  ) {
+    this.searchTerm$
+      .pipe(
+        filter(x => x.propagate),
+        debounceTime(time),
+        distinctUntilChanged(),
+      )
+      .subscribe(term => {
+        this.searchTerm = term.value;
+        this.load();
+      });
   }
 
   load() {
     this.entitiesLoading.set(true);
-    this.apiService.deviceGroupControllerGetCount()
+    this.apiService.deviceGroupControllerGetCount({searchTerm: this.searchTerm})
       .subscribe((count) => this.total.set(count.count));
-    this.apiService.deviceGroupControllerGetAll(this.itemsPerPage, (this.page - 1) * this.itemsPerPage, this.sortCol, this.sortDir)
+    this.apiService.deviceGroupControllerGetAll({
+      limit: this.itemsPerPage,
+      offset: (this.page - 1) * this.itemsPerPage,
+      sortCol: this.sortCol,
+      sortDir: this.sortDir,
+      searchTerm: this.searchTerm
+    })
       .subscribe({
         next: (users) => {
           this.entities.set(users);
@@ -44,4 +66,14 @@ export class DeviceGroupsService {
     this.sortDir = this.sortCol ? sortDir : undefined;
     this.load();
   }
+
+  search(term: string) {
+    this.searchTerm$.next({propagate: true, value: term});
+    this.page = 1;
+  }
+
+  init() {
+    this.searchTerm = '';
+    this.searchTerm$.next({propagate: false, value: ''});
+  }
 }
diff --git a/frontend/src/app/pages/inventory/device-types/device-type-create/device-type-create.service.ts b/frontend/src/app/pages/inventory/device-types/device-type-create/device-type-create.service.ts
index 6bef996..eb2043a 100644
--- a/frontend/src/app/pages/inventory/device-types/device-type-create/device-type-create.service.ts
+++ b/frontend/src/app/pages/inventory/device-types/device-type-create/device-type-create.service.ts
@@ -21,7 +21,7 @@ export class DeviceTypeCreateService {
 
   create(rawValue: DeviceTypeCreateDto) {
     this.createLoading.set(true);
-    this.apiService.deviceTypeControllerCreate(rawValue)
+    this.apiService.deviceTypeControllerCreate({deviceTypeCreateDto: rawValue})
       .subscribe({
         next: (entity) => {
           this.createLoading.set(false);
diff --git a/frontend/src/app/pages/inventory/device-types/device-type-detail/device-type-detail.service.ts b/frontend/src/app/pages/inventory/device-types/device-type-detail/device-type-detail.service.ts
index 40b4805..55ceb0d 100644
--- a/frontend/src/app/pages/inventory/device-types/device-type-detail/device-type-detail.service.ts
+++ b/frontend/src/app/pages/inventory/device-types/device-type-detail/device-type-detail.service.ts
@@ -31,7 +31,7 @@ export class DeviceTypeDetailService {
   load(id: number) {
     this.id = id;
     this.loading.set(true);
-    this.locationService.deviceTypeControllerGetOne(id)
+    this.locationService.deviceTypeControllerGetOne({id})
       .subscribe({
         next: (newEntity) => {
           this.entity.set(newEntity);
@@ -53,7 +53,7 @@ export class DeviceTypeDetailService {
     const entity = this.entity();
     if (entity) {
       this.updateLoading.set(true);
-      this.locationService.deviceTypeControllerUpdate(entity.id, rawValue)
+      this.locationService.deviceTypeControllerUpdate({id: entity.id, deviceTypeUpdateDto: rawValue})
         .subscribe({
           next: (newEntity) => {
             this.updateLoading.set(false);
@@ -72,7 +72,7 @@ export class DeviceTypeDetailService {
     const entity = this.entity();
     if (entity) {
       this.deleteLoading.set(true);
-      this.locationService.deviceTypeControllerDelete(entity.id)
+      this.locationService.deviceTypeControllerDelete({id: entity.id})
         .subscribe({
           next: () => {
             this.deleteLoading.set(false);
diff --git a/frontend/src/app/pages/inventory/device-types/device-types.component.html b/frontend/src/app/pages/inventory/device-types/device-types.component.html
index 657ded3..e926a01 100644
--- a/frontend/src/app/pages/inventory/device-types/device-types.component.html
+++ b/frontend/src/app/pages/inventory/device-types/device-types.component.html
@@ -1,3 +1,15 @@
 <h1>Geräte-Typen</h1>
-<button nz-button nzType="primary" routerLink="create" *ofsHasRole="['device-type.manage']">Geräte-Typ anlegen</button>
+<div nz-row nzJustify="space-between">
+  <div nz-col>
+    <button nz-button nzType="primary" routerLink="create" *ofsHasRole="['device-type.manage']">Geräte-Typ anlegen</button>
+  </div>
+  <div nz-col>
+    <nz-input-group [nzSuffix]="suffixIconSearch">
+      <input type="text" (input)="search($event)" nz-input placeholder="Suchen"/>
+    </nz-input-group>
+    <ng-template #suffixIconSearch>
+      <nz-icon nzType="search" />
+    </ng-template>
+  </div>
+</div>
 <ofs-device-type-list></ofs-device-type-list>
diff --git a/frontend/src/app/pages/inventory/device-types/device-types.component.ts b/frontend/src/app/pages/inventory/device-types/device-types.component.ts
index 5fea3d6..9f5be48 100644
--- a/frontend/src/app/pages/inventory/device-types/device-types.component.ts
+++ b/frontend/src/app/pages/inventory/device-types/device-types.component.ts
@@ -1,23 +1,40 @@
-import {Component} from '@angular/core';
+import {Component, OnInit} from '@angular/core';
 import {HasRoleDirective} from '../../../core/auth/has-role.directive';
-import {NzButtonComponent} from 'ng-zorro-antd/button';
+import {NzButtonModule} from 'ng-zorro-antd/button';
 import {NzWaveDirective} from 'ng-zorro-antd/core/wave';
 import {RouterLink} from '@angular/router';
 import {DeviceTypeListComponent} from './device-type-list/device-type-list.component';
+import {NzGridModule} from 'ng-zorro-antd/grid';
+import {NzInputModule} from 'ng-zorro-antd/input';
+import {NzIconModule} from 'ng-zorro-antd/icon';
+import {DeviceTypesService} from './device-types.service';
 
 @Component({
   selector: 'ofs-device-types',
   imports: [
     HasRoleDirective,
-    NzButtonComponent,
     NzWaveDirective,
     RouterLink,
-    DeviceTypeListComponent
+    DeviceTypeListComponent,
+    NzButtonModule,
+    NzGridModule,
+    NzInputModule,
+    NzIconModule,
   ],
   standalone: true,
   templateUrl: './device-types.component.html',
   styleUrl: './device-types.component.less'
 })
-export class DeviceTypesComponent {
+export class DeviceTypesComponent implements OnInit {
+  constructor(private service: DeviceTypesService) {
+  }
 
+  search($event: Event) {
+    const target = $event.target as HTMLInputElement;
+    this.service.search(target.value);
+  }
+
+  ngOnInit(): void {
+    this.service.init();
+  }
 }
diff --git a/frontend/src/app/pages/inventory/device-types/device-types.service.ts b/frontend/src/app/pages/inventory/device-types/device-types.service.ts
index 4bf60a1..82706f0 100644
--- a/frontend/src/app/pages/inventory/device-types/device-types.service.ts
+++ b/frontend/src/app/pages/inventory/device-types/device-types.service.ts
@@ -1,6 +1,8 @@
-import {Injectable, signal} from '@angular/core';
+import {Inject, Injectable, signal} from '@angular/core';
 import {DeviceTypeDto} from '@backend/model/deviceTypeDto';
 import {DeviceTypeService} from '@backend/api/deviceType.service';
+import {BehaviorSubject, debounceTime, distinctUntilChanged, filter} from 'rxjs';
+import {SEARCH_DEBOUNCE_TIME} from '../../../app.configs';
 
 @Injectable({
   providedIn: 'root'
@@ -14,15 +16,35 @@ export class DeviceTypesService {
   entitiesLoadError = signal(false);
   sortCol?: string;
   sortDir?: string;
+  searchTerm$ = new BehaviorSubject<{ propagate: boolean, value: string }>({propagate: true, value: ''});
+  private searchTerm?: string;
 
-  constructor(private readonly apiService: DeviceTypeService) {
+  constructor(private readonly apiService: DeviceTypeService,
+              @Inject(SEARCH_DEBOUNCE_TIME) time: number,
+  ) {
+    this.searchTerm$
+      .pipe(
+        filter(x => x.propagate),
+        debounceTime(time),
+        distinctUntilChanged(),
+      )
+      .subscribe(term => {
+        this.searchTerm = term.value;
+        this.load();
+      });
   }
 
   load() {
     this.entitiesLoading.set(true);
-    this.apiService.deviceTypeControllerGetCount()
+    this.apiService.deviceTypeControllerGetCount({searchTerm: this.searchTerm})
       .subscribe((count) => this.total.set(count.count));
-    this.apiService.deviceTypeControllerGetAll(this.itemsPerPage, (this.page - 1) * this.itemsPerPage, this.sortCol, this.sortDir)
+    this.apiService.deviceTypeControllerGetAll({
+      limit: this.itemsPerPage,
+      offset: (this.page - 1) * this.itemsPerPage,
+      sortCol: this.sortCol,
+      sortDir: this.sortDir,
+      searchTerm: this.searchTerm
+    })
       .subscribe({
         next: (users) => {
           this.entities.set(users);
@@ -44,4 +66,14 @@ export class DeviceTypesService {
     this.sortDir = this.sortCol ? sortDir : undefined;
     this.load();
   }
+
+  search(term: string) {
+    this.searchTerm$.next({propagate: true, value: term});
+    this.page = 1;
+  }
+
+  init() {
+    this.searchTerm = '';
+    this.searchTerm$.next({propagate: false, value: ''});
+  }
 }
diff --git a/frontend/src/app/pages/inventory/devices/device-create/device-create.component.html b/frontend/src/app/pages/inventory/devices/device-create/device-create.component.html
index b7ee5c4..ecdb9fd 100644
--- a/frontend/src/app/pages/inventory/devices/device-create/device-create.component.html
+++ b/frontend/src/app/pages/inventory/devices/device-create/device-create.component.html
@@ -41,20 +41,20 @@ <h1>Geräte erstellen</h1>
     <nz-form-label [nzSpan]="7">Standort/Fahrzeug</nz-form-label>
     <nz-form-control [nzSpan]="12">
       <nz-select
-        (nzScrollToBottom)="loadMoreLocations()"
+        (nzOnSearch)="onSearchLocation($event)"
         formControlName="locationId"
         nzPlaceHolder="Standort/Fahrzeug auswählen"
         nzAllowClear
-        [nzDropdownRender]="renderTemplateLocation">
-        @for (item of locations(); track item) {
-          <nz-option [nzValue]="item.id" [nzLabel]="item.name"></nz-option>
-        }
-      </nz-select>
-      <ng-template #renderTemplateLocation>
+        nzShowSearch
+        nzServerSearch>
         @if (locationsIsLoading()) {
           <nz-spin></nz-spin>
+        } @else {
+          @for (item of locations(); track item) {
+            <nz-option [nzValue]="item.id" [nzLabel]="item.name"></nz-option>
+          }
         }
-      </ng-template>
+      </nz-select>
     </nz-form-control>
   </nz-form-item>
 
@@ -62,20 +62,20 @@ <h1>Geräte erstellen</h1>
     <nz-form-label [nzSpan]="7">Geräte-Typ</nz-form-label>
     <nz-form-control [nzSpan]="12">
       <nz-select
-        (nzScrollToBottom)="loadMoreTypes()"
+        (nzOnSearch)="onSearchType($event)"
         formControlName="typeId"
         nzPlaceHolder="Geräte-Typ auswählen"
         nzAllowClear
-        [nzDropdownRender]="renderTemplateType">
-        @for (item of deviceTypes(); track item) {
-          <nz-option [nzValue]="item.id" [nzLabel]="item.name"></nz-option>
-        }
-      </nz-select>
-      <ng-template #renderTemplateType>
+        nzShowSearch
+        nzServerSearch>
         @if (deviceTypesIsLoading()) {
           <nz-spin></nz-spin>
+        } @else {
+          @for (item of deviceTypes(); track item) {
+            <nz-option [nzValue]="item.id" [nzLabel]="item.name"></nz-option>
+          }
         }
-      </ng-template>
+      </nz-select>
     </nz-form-control>
   </nz-form-item>
 
@@ -83,20 +83,20 @@ <h1>Geräte erstellen</h1>
     <nz-form-label [nzSpan]="7">Geräte-Gruppe</nz-form-label>
     <nz-form-control [nzSpan]="12">
       <nz-select
-        (nzScrollToBottom)="loadMoreGroups()"
+        (nzOnSearch)="onSearchGroup($event)"
         formControlName="groupId"
         nzPlaceHolder="Geräte-Gruppe auswählen"
         nzAllowClear
-        [nzDropdownRender]="renderTemplateGroup">
-        @for (item of deviceGroups(); track item) {
-          <nz-option [nzValue]="item.id" [nzLabel]="item.name"></nz-option>
-        }
-      </nz-select>
-      <ng-template #renderTemplateGroup>
+        nzShowSearch
+        nzServerSearch>
         @if (deviceGroupsIsLoading()) {
           <nz-spin></nz-spin>
+        } @else {
+          @for (item of deviceGroups(); track item) {
+            <nz-option [nzValue]="item.id" [nzLabel]="item.name"></nz-option>
+          }
         }
-      </ng-template>
+      </nz-select>
     </nz-form-control>
   </nz-form-item>
 
diff --git a/frontend/src/app/pages/inventory/devices/device-create/device-create.component.ts b/frontend/src/app/pages/inventory/devices/device-create/device-create.component.ts
index e979b74..dde98f1 100644
--- a/frontend/src/app/pages/inventory/devices/device-create/device-create.component.ts
+++ b/frontend/src/app/pages/inventory/devices/device-create/device-create.component.ts
@@ -1,4 +1,4 @@
-import {Component, OnDestroy, OnInit, Signal} from '@angular/core';
+import {Component, OnDestroy, Signal} from '@angular/core';
 import {FormControl, FormGroup, ReactiveFormsModule, Validators} from '@angular/forms';
 import {NzButtonModule} from 'ng-zorro-antd/button';
 import {NzFormModule} from 'ng-zorro-antd/form';
@@ -35,7 +35,6 @@ interface DeviceCreateForm {
   locationId: FormControl<number | null>;
 }
 
-// TODO Geräte-Typ durch eintippen von filtern
 @Component({
   selector: 'ofs-device-create',
   imports: [ReactiveFormsModule, NzButtonModule, NzFormModule, NzInputModule, NzCheckboxModule, NzInputNumberModule, NzDatePickerModule, NzOptionComponent, NzSelectComponent, NzSpinComponent],
@@ -43,7 +42,7 @@ interface DeviceCreateForm {
   templateUrl: './device-create.component.html',
   styleUrl: './device-create.component.less'
 })
-export class DeviceCreateComponent implements OnInit, OnDestroy {
+export class DeviceCreateComponent implements OnDestroy {
   states = DeviceTypes.all;
 
   form = new FormGroup<DeviceCreateForm>({
@@ -133,25 +132,20 @@ export class DeviceCreateComponent implements OnInit, OnDestroy {
     this.service.create(this.form.getRawValue() as any); // TODO
   }
 
-  loadMoreLocations() {
-    this.service.loadMoreLocations();
-  }
-
-  loadMoreTypes() {
-    this.service.loadMoreTypes();
+  ngOnDestroy(): void {
+    this.destroy$.next();
+    this.destroy$.complete();
   }
 
-  loadMoreGroups() {
-    this.service.loadMoreGroups();
+  onSearchLocation(search: string) {
+    this.service.onSearchLocation(search);
   }
 
-  ngOnInit(): void {
-    this.service.loadMoreTypes(true);
-    this.service.loadMoreGroups(true);
-    this.service.loadMoreLocations(true);
+  onSearchType(search: string) {
+    this.service.onSearchType(search);
   }
 
-  ngOnDestroy(): void {
-    this.destroy$.next();
+  onSearchGroup(search: string) {
+    this.service.onSearchGroup(search);
   }
 }
diff --git a/frontend/src/app/pages/inventory/devices/device-create/device-create.service.ts b/frontend/src/app/pages/inventory/devices/device-create/device-create.service.ts
index 82ce408..fc5a029 100644
--- a/frontend/src/app/pages/inventory/devices/device-create/device-create.service.ts
+++ b/frontend/src/app/pages/inventory/devices/device-create/device-create.service.ts
@@ -1,5 +1,5 @@
-import {Injectable, signal} from '@angular/core';
-import {Subject} from 'rxjs';
+import {Inject, Injectable, signal} from '@angular/core';
+import {BehaviorSubject, debounceTime, filter, Subject} from 'rxjs';
 import {Router} from '@angular/router';
 import {DeviceService} from '@backend/api/device.service';
 import {HttpErrorResponse} from '@angular/common/http';
@@ -10,6 +10,7 @@ import {DeviceGroupDto} from '@backend/model/deviceGroupDto';
 import {DeviceGroupService} from '@backend/api/deviceGroup.service';
 import {LocationDto} from '@backend/model/locationDto';
 import {LocationService} from '@backend/api/location.service';
+import {SEARCH_DEBOUNCE_TIME, SELECT_ITEMS_COUNT} from '../../../../app.configs';
 
 @Injectable({
   providedIn: 'root'
@@ -19,20 +20,20 @@ export class DeviceCreateService {
   createLoadingError = new Subject<string>();
   createLoadingSuccess = new Subject<void>();
 
+  deviceTypesSearch$ = new BehaviorSubject<{ propagate: boolean; value: string }>({propagate: false, value: ''});
+  deviceTypesSearch = '';
   deviceTypes = signal<DeviceTypeDto[]>([]);
   deviceTypesIsLoading = signal(false);
-  private deviceTypesPage = 0;
-  private deviceTypesItemsPerPage = 10;
 
+  deviceGroupsSearch$ = new BehaviorSubject<{ propagate: boolean; value: string }>({propagate: false, value: ''});
+  deviceGroupsSearch = '';
   deviceGroups = signal<DeviceGroupDto[]>([]);
   deviceGroupsIsLoading = signal(false);
-  private deviceGroupsPage = 0;
-  private deviceGroupsItemsPerPage = 10;
 
+  locationSearch$ = new BehaviorSubject<{ propagate: boolean; value: string }>({propagate: false, value: ''});
+  locationSearch = '';
   locations = signal<LocationDto[]>([]);
   locationsIsLoading = signal(false);
-  private locationsPage = 0;
-  private locationsItemsPerPage = 10;
 
   constructor(
     private readonly apiService: DeviceService,
@@ -40,12 +41,35 @@ export class DeviceCreateService {
     private readonly apiDeviceGroupsService: DeviceGroupService,
     private readonly apiLocationsService: LocationService,
     private readonly router: Router,
+    @Inject(SEARCH_DEBOUNCE_TIME) time: number,
+    @Inject(SELECT_ITEMS_COUNT) private readonly selectCount: number,
   ) {
+    this.locationSearch$.pipe(
+      filter(x => x.propagate),
+      debounceTime(time),
+    ).subscribe((x) => {
+      this.locationSearch = x.value;
+      this.loadMoreLocations();
+    });
+    this.deviceTypesSearch$.pipe(
+      filter(x => x.propagate),
+      debounceTime(time),
+    ).subscribe((x) => {
+      this.deviceTypesSearch = x.value;
+      this.loadMoreTypes();
+    });
+    this.deviceGroupsSearch$.pipe(
+      filter(x => x.propagate),
+      debounceTime(time),
+    ).subscribe((x) => {
+      this.deviceGroupsSearch = x.value;
+      this.loadMoreGroups();
+    });
   }
 
   create(rawValue: DeviceCreateDto) {
     this.createLoading.set(true);
-    this.apiService.deviceControllerCreate(rawValue)
+    this.apiService.deviceControllerCreate({deviceCreateDto: rawValue})
       .subscribe({
         next: (entity) => {
           this.createLoading.set(false);
@@ -59,81 +83,73 @@ export class DeviceCreateService {
       });
   }
 
-  loadMoreTypes(init = false) {
-    if (init) {
-      this.deviceTypesPage = 0;
-      this.deviceTypes.set([]);
-    }
+  loadMoreTypes() {
+
     this.deviceTypesIsLoading.set(true);
     this.apiDeviceTypesService
-      .deviceTypeControllerGetAll(this.deviceTypesItemsPerPage, this.deviceTypesPage * this.deviceTypesItemsPerPage)
+      .deviceTypeControllerGetAll({
+        limit: this.selectCount,
+        searchTerm: this.deviceTypesSearch
+      })
       .subscribe({
         next: (deviceTypes) => {
           this.deviceTypesIsLoading.set(false);
-          const newDeviceTypes = [
-            ...this.deviceTypes(),
-            ...deviceTypes,
-          ];
-          this.deviceTypes.set(newDeviceTypes);
-          this.deviceTypesPage += 1;
+          this.deviceTypes.set(deviceTypes);
         },
         error: () => {
           this.deviceTypesIsLoading.set(false);
           this.deviceTypes.set([]);
-          this.deviceTypesPage = 0;
         }
       });
   }
 
-  loadMoreGroups(init = false) {
-    if (init) {
-      this.deviceGroupsPage = 0;
-      this.deviceGroups.set([]);
-    }
+  loadMoreGroups() {
     this.deviceGroupsIsLoading.set(true);
     this.apiDeviceGroupsService
-      .deviceGroupControllerGetAll(this.deviceGroupsItemsPerPage, this.deviceGroupsPage * this.deviceGroupsItemsPerPage)
+      .deviceGroupControllerGetAll({
+        limit: this.selectCount,
+        searchTerm: this.deviceGroupsSearch,
+      })
       .subscribe({
         next: (deviceGroups) => {
           this.deviceGroupsIsLoading.set(false);
-          const newDeviceGroups = [
-            ...this.deviceGroups(),
-            ...deviceGroups,
-          ];
-          this.deviceGroups.set(newDeviceGroups);
-          this.deviceGroupsPage += 1;
+          this.deviceGroups.set(deviceGroups);
         },
         error: () => {
           this.deviceGroupsIsLoading.set(false);
           this.deviceGroups.set([]);
-          this.deviceGroupsPage = 0;
         }
       });
   }
 
-  loadMoreLocations(init = false) {
-    if (init) {
-      this.locationsPage = 0;
-      this.locations.set([]);
-    }
+  loadMoreLocations() {
     this.locationsIsLoading.set(true);
     this.apiLocationsService
-      .locationControllerGetAll(this.locationsItemsPerPage, this.locationsPage * this.locationsItemsPerPage)
+      .locationControllerGetAll({
+        limit: this.selectCount,
+        searchTerm: this.locationSearch
+      })
       .subscribe({
         next: (locations) => {
           this.locationsIsLoading.set(false);
-          const newlocations = [
-            ...this.locations(),
-            ...locations,
-          ];
-          this.locations.set(newlocations);
-          this.locationsPage += 1;
+          this.locations.set(locations);
         },
         error: () => {
           this.locationsIsLoading.set(false);
           this.locations.set([]);
-          this.locationsPage = 0;
         }
       });
   }
+
+  onSearchLocation(value: string): void {
+    this.locationSearch$.next({propagate: true, value});
+  }
+
+  onSearchType(value: string): void {
+    this.deviceTypesSearch$.next({propagate: true, value});
+  }
+
+  onSearchGroup(value: string): void {
+    this.deviceGroupsSearch$.next({propagate: true, value});
+  }
 }
diff --git a/frontend/src/app/pages/inventory/devices/device-detail/device-detail.component.html b/frontend/src/app/pages/inventory/devices/device-detail/device-detail.component.html
index 468e73b..9df7f9d 100644
--- a/frontend/src/app/pages/inventory/devices/device-detail/device-detail.component.html
+++ b/frontend/src/app/pages/inventory/devices/device-detail/device-detail.component.html
@@ -47,21 +47,20 @@ <h1>Der Gerät wurde nicht gefunden!</h1>
       <nz-form-label [nzSpan]="7">Standort/Fahrzeug</nz-form-label>
       <nz-form-control [nzSpan]="12">
         <nz-select
-          (nzScrollToBottom)="loadMoreLocations()"
+          (nzOnSearch)="onSearchLocation($event)"
           formControlName="locationId"
           nzPlaceHolder="Standort/Fahrzeug auswählen"
           nzAllowClear
-          [nzDropdownRender]="renderTemplateLocation">
-          @for (item of locations(); track item) {
-            <nz-option [nzValue]="item.id"
-                       [nzLabel]="item.name + (item.parent ? '(' + item.parent.name +  ')':'')"></nz-option>
-          }
-        </nz-select>
-        <ng-template #renderTemplateLocation>
+          nzShowSearch
+          nzServerSearch>
           @if (locationsIsLoading()) {
             <nz-spin></nz-spin>
+          } @else {
+            @for (item of locations(); track item) {
+              <nz-option [nzValue]="item.id" [nzLabel]="item.name"></nz-option>
+            }
           }
-        </ng-template>
+        </nz-select>
       </nz-form-control>
     </nz-form-item>
 
@@ -69,20 +68,20 @@ <h1>Der Gerät wurde nicht gefunden!</h1>
       <nz-form-label [nzSpan]="7">Geräte-Typ</nz-form-label>
       <nz-form-control [nzSpan]="12">
         <nz-select
-          (nzScrollToBottom)="loadMoreTypes()"
+          (nzOnSearch)="onSearchType($event)"
           formControlName="typeId"
           nzPlaceHolder="Geräte-Typ auswählen"
           nzAllowClear
-          [nzDropdownRender]="renderTemplate">
-          @for (item of deviceTypes(); track item) {
-            <nz-option [nzValue]="item.id" [nzLabel]="item.name"></nz-option>
-          }
-        </nz-select>
-        <ng-template #renderTemplate>
+          nzShowSearch
+          nzServerSearch>
           @if (deviceTypesIsLoading()) {
             <nz-spin></nz-spin>
+          } @else {
+            @for (item of deviceTypes(); track item) {
+              <nz-option [nzValue]="item.id" [nzLabel]="item.name"></nz-option>
+            }
           }
-        </ng-template>
+        </nz-select>
       </nz-form-control>
     </nz-form-item>
 
@@ -90,20 +89,20 @@ <h1>Der Gerät wurde nicht gefunden!</h1>
       <nz-form-label [nzSpan]="7">Geräte-Gruppe</nz-form-label>
       <nz-form-control [nzSpan]="12">
         <nz-select
-          (nzScrollToBottom)="loadMoreGroups()"
+          (nzOnSearch)="onSearchGroup($event)"
           formControlName="groupId"
           nzPlaceHolder="Geräte-Gruppe auswählen"
           nzAllowClear
-          [nzDropdownRender]="renderTemplateGroups">
-          @for (item of deviceGroups(); track item) {
-            <nz-option [nzValue]="item.id" [nzLabel]="item.name"></nz-option>
-          }
-        </nz-select>
-        <ng-template #renderTemplateGroups>
+          nzShowSearch
+          nzServerSearch>
           @if (deviceGroupsIsLoading()) {
             <nz-spin></nz-spin>
+          } @else {
+            @for (item of deviceGroups(); track item) {
+              <nz-option [nzValue]="item.id" [nzLabel]="item.name"></nz-option>
+            }
           }
-        </ng-template>
+        </nz-select>
       </nz-form-control>
     </nz-form-item>
 
diff --git a/frontend/src/app/pages/inventory/devices/device-detail/device-detail.component.ts b/frontend/src/app/pages/inventory/devices/device-detail/device-detail.component.ts
index 65ffd6a..d2b41f0 100644
--- a/frontend/src/app/pages/inventory/devices/device-detail/device-detail.component.ts
+++ b/frontend/src/app/pages/inventory/devices/device-detail/device-detail.component.ts
@@ -195,15 +195,15 @@ export class DeviceDetailComponent implements OnInit, OnDestroy {
     this.service.delete();
   }
 
-  loadMoreTypes() {
-    this.service.loadMoreTypes();
+  onSearchLocation(search: string) {
+    this.service.onSearchLocation(search);
   }
 
-  loadMoreGroups() {
-    this.service.loadMoreGroups();
+  onSearchType(search: string) {
+    this.service.onSearchType(search);
   }
 
-  loadMoreLocations() {
-    this.service.loadMoreLocations();
+  onSearchGroup(search: string) {
+    this.service.onSearchGroup(search);
   }
 }
diff --git a/frontend/src/app/pages/inventory/devices/device-detail/device-detail.service.ts b/frontend/src/app/pages/inventory/devices/device-detail/device-detail.service.ts
index 8265dbd..bdb152c 100644
--- a/frontend/src/app/pages/inventory/devices/device-detail/device-detail.service.ts
+++ b/frontend/src/app/pages/inventory/devices/device-detail/device-detail.service.ts
@@ -1,9 +1,9 @@
-import {Injectable, signal} from '@angular/core';
+import {Inject, Injectable, signal} from '@angular/core';
 import {DeviceService} from '@backend/api/device.service';
 import {DeviceTypeService} from '@backend/api/deviceType.service';
 import {Router} from '@angular/router';
 import {HttpErrorResponse} from '@angular/common/http';
-import {Subject} from 'rxjs';
+import {BehaviorSubject, debounceTime, filter, Subject} from 'rxjs';
 import {DeviceDto} from '@backend/model/deviceDto';
 import {DeviceTypeDto} from '@backend/model/deviceTypeDto';
 import {DeviceUpdateDto} from '@backend/model/deviceUpdateDto';
@@ -11,6 +11,7 @@ import {DeviceGroupDto} from '@backend/model/deviceGroupDto';
 import {DeviceGroupService} from '@backend/api/deviceGroup.service';
 import {LocationDto} from '@backend/model/locationDto';
 import {LocationService} from '@backend/api/location.service';
+import {SEARCH_DEBOUNCE_TIME, SELECT_ITEMS_COUNT} from '../../../../app.configs';
 
 @Injectable({
   providedIn: 'root'
@@ -28,20 +29,20 @@ export class DeviceDetailService {
   updateLoadingSuccess = new Subject<void>();
   deleteLoadingSuccess = new Subject<void>();
 
+  deviceTypesSearch$ = new BehaviorSubject<{ propagate: boolean; value: string }>({propagate: false, value: ''});
+  deviceTypesSearch = '';
   deviceTypes = signal<DeviceTypeDto[]>([]);
   deviceTypesIsLoading = signal(false);
-  private deviceTypesPage = 0;
-  private deviceTypesItemsPerPage = 10;
 
+  deviceGroupsSearch$ = new BehaviorSubject<{ propagate: boolean; value: string }>({propagate: false, value: ''});
+  deviceGroupsSearch = '';
   deviceGroups = signal<DeviceGroupDto[]>([]);
   deviceGroupsIsLoading = signal(false);
-  private deviceGroupsPage = 0;
-  private deviceGroupsItemsPerPage = 10;
 
+  locationSearch$ = new BehaviorSubject<{ propagate: boolean; value: string }>({propagate: false, value: ''});
+  locationSearch = '';
   locations = signal<LocationDto[]>([]);
   locationsIsLoading = signal(false);
-  private locationsPage = 0;
-  private locationsItemsPerPage = 10;
 
   constructor(
     private readonly apiService: DeviceService,
@@ -49,19 +50,40 @@ export class DeviceDetailService {
     private readonly apiDeviceGroupsService: DeviceGroupService,
     private readonly apiLocationsService: LocationService,
     private readonly router: Router,
+    @Inject(SEARCH_DEBOUNCE_TIME) time: number,
+    @Inject(SELECT_ITEMS_COUNT) private readonly selectCount: number,
   ) {
+    this.locationSearch$.pipe(
+      filter(x => x.propagate),
+      debounceTime(time),
+    ).subscribe((x) => {
+      this.locationSearch = x.value;
+      this.loadMoreLocations();
+    });
+    this.deviceTypesSearch$.pipe(
+      filter(x => x.propagate),
+      debounceTime(time),
+    ).subscribe((x) => {
+      this.deviceTypesSearch = x.value;
+      this.loadMoreTypes();
+    });
+    this.deviceGroupsSearch$.pipe(
+      filter(x => x.propagate),
+      debounceTime(time),
+    ).subscribe((x) => {
+      this.deviceGroupsSearch = x.value;
+      this.loadMoreGroups();
+    });
   }
 
   load(id: number) {
     this.id = id;
-    this.deviceTypesPage = 0;
-    this.deviceGroupsPage = 0;
-    this.locationsPage = 0;
+
     this.deviceTypes.set([]);
     this.deviceGroups.set([]);
     this.locations.set([]);
     this.loading.set(true);
-    this.apiService.deviceControllerGetOne(id)
+    this.apiService.deviceControllerGetOne({id})
       .subscribe({
         next: (newEntity) => {
           this.entity.set(newEntity);
@@ -76,9 +98,6 @@ export class DeviceDetailService {
           if (newEntity.location) {
             this.locations.set([newEntity.location]);
           }
-          this.loadMoreTypes();
-          this.loadMoreGroups();
-          this.loadMoreLocations();
         },
         error: (err: HttpErrorResponse) => {
           if (err.status === 404) {
@@ -95,7 +114,7 @@ export class DeviceDetailService {
     const entity = this.entity();
     if (entity) {
       this.updateLoading.set(true);
-      this.apiService.deviceControllerUpdate(entity.id, rawValue)
+      this.apiService.deviceControllerUpdate({id: entity.id, deviceUpdateDto: rawValue})
         .subscribe({
           next: (newEntity) => {
             this.updateLoading.set(false);
@@ -114,7 +133,7 @@ export class DeviceDetailService {
     const entity = this.entity();
     if (entity) {
       this.deleteLoading.set(true);
-      this.apiService.deviceControllerDelete(entity.id)
+      this.apiService.deviceControllerDelete({id: entity.id})
         .subscribe({
           next: () => {
             this.deleteLoading.set(false);
@@ -132,21 +151,18 @@ export class DeviceDetailService {
   loadMoreTypes() {
     this.deviceTypesIsLoading.set(true);
     this.apiDeviceTypesService
-      .deviceTypeControllerGetAll(this.deviceTypesItemsPerPage, this.deviceTypesPage * this.deviceTypesItemsPerPage)
+      .deviceTypeControllerGetAll({
+        limit: this.selectCount,
+        searchTerm: this.deviceTypesSearch,
+      })
       .subscribe({
         next: (deviceTypes) => {
           this.deviceTypesIsLoading.set(false);
-          const newDeviceTypes = [
-            ...this.deviceTypes(),
-            ...deviceTypes.filter(x => x.id != this.entity()?.typeId),
-          ];
-          this.deviceTypes.set(newDeviceTypes);
-          this.deviceTypesPage += 1;
+          this.deviceTypes.set(deviceTypes);
         },
         error: () => {
           this.deviceTypesIsLoading.set(false);
           this.deviceTypes.set([]);
-          this.deviceTypesPage = 0;
         }
       });
   }
@@ -154,21 +170,18 @@ export class DeviceDetailService {
   loadMoreGroups() {
     this.deviceGroupsIsLoading.set(true);
     this.apiDeviceGroupsService
-      .deviceGroupControllerGetAll(this.deviceGroupsItemsPerPage, this.deviceGroupsPage * this.deviceGroupsItemsPerPage)
+      .deviceGroupControllerGetAll({
+        limit: this.selectCount,
+        searchTerm: this.deviceGroupsSearch,
+      })
       .subscribe({
         next: (deviceGroups) => {
           this.deviceGroupsIsLoading.set(false);
-          const newDeviceGroups = [
-            ...this.deviceGroups(),
-            ...deviceGroups.filter(x => x.id != this.entity()?.groupId),
-          ];
-          this.deviceGroups.set(newDeviceGroups);
-          this.deviceGroupsPage += 1;
+          this.deviceGroups.set(deviceGroups);
         },
         error: () => {
           this.deviceGroupsIsLoading.set(false);
           this.deviceGroups.set([]);
-          this.deviceGroupsPage = 0;
         }
       });
   }
@@ -176,22 +189,31 @@ export class DeviceDetailService {
   loadMoreLocations() {
     this.locationsIsLoading.set(true);
     this.apiLocationsService
-      .locationControllerGetAll(this.locationsItemsPerPage, this.locationsPage * this.locationsItemsPerPage)
+      .locationControllerGetAll({
+        limit: this.selectCount,
+        searchTerm: this.locationSearch,
+      })
       .subscribe({
         next: (locations) => {
           this.locationsIsLoading.set(false);
-          const newlocations = [
-            ...this.locations(),
-            ...locations.filter(x => x.id != this.entity()?.locationId),
-          ];
-          this.locations.set(newlocations);
-          this.locationsPage += 1;
+          this.locations.set(locations);
         },
         error: () => {
           this.locationsIsLoading.set(false);
           this.locations.set([]);
-          this.locationsPage = 0;
         }
       });
   }
+
+  onSearchLocation(value: string): void {
+    this.locationSearch$.next({propagate: true, value});
+  }
+
+  onSearchType(value: string): void {
+    this.deviceTypesSearch$.next({propagate: true, value});
+  }
+
+  onSearchGroup(value: string): void {
+    this.deviceGroupsSearch$.next({propagate: true, value});
+  }
 }
diff --git a/frontend/src/app/pages/inventory/devices/devices.component.html b/frontend/src/app/pages/inventory/devices/devices.component.html
index 83f2476..30093a6 100644
--- a/frontend/src/app/pages/inventory/devices/devices.component.html
+++ b/frontend/src/app/pages/inventory/devices/devices.component.html
@@ -1,3 +1,15 @@
 <h1>Geräte</h1>
-<button nz-button nzType="primary" routerLink="create" *ofsHasRole="['device-type.manage']">Gerät anlegen</button>
+<div nz-row nzJustify="space-between">
+  <div nz-col>
+    <button nz-button nzType="primary" routerLink="create" *ofsHasRole="['device-type.manage']">Gerät anlegen</button>
+  </div>
+  <div nz-col>
+    <nz-input-group [nzSuffix]="suffixIconSearch">
+      <input type="text" (input)="search($event)" nz-input placeholder="Suchen"/>
+    </nz-input-group>
+    <ng-template #suffixIconSearch>
+      <nz-icon nzType="search" />
+    </ng-template>
+  </div>
+</div>
 <ofs-device-list></ofs-device-list>
diff --git a/frontend/src/app/pages/inventory/devices/devices.component.ts b/frontend/src/app/pages/inventory/devices/devices.component.ts
index 95053ab..4f79b5c 100644
--- a/frontend/src/app/pages/inventory/devices/devices.component.ts
+++ b/frontend/src/app/pages/inventory/devices/devices.component.ts
@@ -1,9 +1,15 @@
-import {Component} from '@angular/core';
+import {Component, OnInit} from '@angular/core';
 import {HasRoleDirective} from '../../../core/auth/has-role.directive';
 import {NzButtonComponent} from 'ng-zorro-antd/button';
 import {NzWaveDirective} from 'ng-zorro-antd/core/wave';
 import {RouterLink} from '@angular/router';
 import {DeviceListComponent} from './device-list/device-list.component';
+import {NzGridModule} from 'ng-zorro-antd/grid';
+import {NzIconModule} from 'ng-zorro-antd/icon';
+import {
+  NzInputModule
+} from 'ng-zorro-antd/input';
+import {DevicesService} from './devices.service';
 
 @Component({
   selector: 'ofs-devices',
@@ -12,12 +18,25 @@ import {DeviceListComponent} from './device-list/device-list.component';
     NzButtonComponent,
     NzWaveDirective,
     RouterLink,
-    DeviceListComponent
+    DeviceListComponent,
+    NzGridModule,
+    NzInputModule,
+    NzIconModule,
   ],
   standalone: true,
   templateUrl: './devices.component.html',
   styleUrl: './devices.component.less'
 })
-export class DevicesComponent {
+export class DevicesComponent implements OnInit {
+  constructor(private readonly service: DevicesService) {
+  }
 
+  search($event: Event) {
+    const target = $event.target as HTMLInputElement;
+    this.service.search(target.value);
+  }
+
+  ngOnInit(): void {
+    this.service.init();
+  }
 }
diff --git a/frontend/src/app/pages/inventory/devices/devices.service.ts b/frontend/src/app/pages/inventory/devices/devices.service.ts
index b07e3ac..9345700 100644
--- a/frontend/src/app/pages/inventory/devices/devices.service.ts
+++ b/frontend/src/app/pages/inventory/devices/devices.service.ts
@@ -1,6 +1,8 @@
-import {Injectable, signal} from '@angular/core';
+import {Inject, Injectable, signal} from '@angular/core';
 import {DeviceDto} from '@backend/model/deviceDto';
 import {DeviceService} from '@backend/api/device.service';
+import {BehaviorSubject, debounceTime, distinctUntilChanged, filter} from 'rxjs';
+import {SEARCH_DEBOUNCE_TIME} from '../../../app.configs';
 
 @Injectable({
   providedIn: 'root'
@@ -14,16 +16,36 @@ export class DevicesService {
   entitiesLoadError = signal(false);
   sortCol?: string;
   sortDir?: string;
+  searchTerm$ = new BehaviorSubject<{ propagate: boolean, value: string }>({propagate: true, value: ''});
+  private searchTerm?: string;
 
-  constructor(private readonly apiService: DeviceService) {
+  constructor(
+    private readonly apiService: DeviceService,
+    @Inject(SEARCH_DEBOUNCE_TIME) time: number,
+  ) {
+    this.searchTerm$
+      .pipe(
+        filter(x => x.propagate),
+        debounceTime(time),
+        distinctUntilChanged(),
+      )
+      .subscribe(term => {
+        this.searchTerm = term.value;
+        this.load();
+      });
   }
 
   load() {
     this.entitiesLoading.set(true);
-    this.apiService.deviceControllerGetCount()
+    this.apiService.deviceControllerGetCount({searchTerm: this.searchTerm})
       .subscribe((count) => this.total.set(count.count));
-    this.apiService.deviceControllerGetAll(this.itemsPerPage, (this.page - 1) * this.itemsPerPage, undefined,
-      undefined, undefined, this.sortCol, this.sortDir)
+    this.apiService.deviceControllerGetAll({
+      limit: this.itemsPerPage,
+      offset: (this.page - 1) * this.itemsPerPage,
+      searchTerm: this.searchTerm,
+      sortCol: this.sortCol,
+      sortDir: this.sortDir,
+    })
       .subscribe({
         next: (entities) => {
           this.entities.set(entities);
@@ -45,4 +67,14 @@ export class DevicesService {
     this.sortDir = this.sortCol ? sortDir : undefined;
     this.load();
   }
+
+  search(term: string) {
+    this.searchTerm$.next({propagate: true, value: term});
+    this.page = 1;
+  }
+
+  init() {
+    this.searchTerm = '';
+    this.searchTerm$.next({propagate: false, value: ''});
+  }
 }
diff --git a/openapi/backend.yml b/openapi/backend.yml
index 995f3f3..138e4ed 100644
--- a/openapi/backend.yml
+++ b/openapi/backend.yml
@@ -512,7 +512,12 @@ paths:
     get:
       description: Gibt die Anzahl aller Device-Typen zurück
       operationId: DeviceTypeController_getCount
-      parameters: []
+      parameters:
+        - name: searchTerm
+          required: false
+          in: query
+          schema:
+            type: string
       responses:
         '200':
           description: ''
@@ -552,6 +557,11 @@ paths:
           in: query
           schema:
             type: string
+        - name: searchTerm
+          required: false
+          in: query
+          schema:
+            type: string
       responses:
         '200':
           description: ''
@@ -676,7 +686,12 @@ paths:
     get:
       description: Gibt die Anzahl aller Geräte-Gruppen zurück
       operationId: DeviceGroupController_getCount
-      parameters: []
+      parameters:
+        - name: searchTerm
+          required: false
+          in: query
+          schema:
+            type: string
       responses:
         '200':
           description: ''
@@ -716,6 +731,11 @@ paths:
           in: query
           schema:
             type: string
+        - name: searchTerm
+          required: false
+          in: query
+          schema:
+            type: string
       responses:
         '200':
           description: ''
@@ -840,7 +860,12 @@ paths:
     get:
       description: Gibt die Anzahl aller Geräte zurück
       operationId: DeviceController_getCount
-      parameters: []
+      parameters:
+        - name: searchTerm
+          required: false
+          in: query
+          schema:
+            type: string
       responses:
         '200':
           description: ''
@@ -898,6 +923,11 @@ paths:
           in: query
           schema:
             type: string
+        - name: searchTerm
+          required: false
+          in: query
+          schema:
+            type: string
       responses:
         '200':
           description: ''
@@ -1022,7 +1052,12 @@ paths:
     get:
       description: Gibt die Anzahl aller Standorte zurück
       operationId: LocationController_getCount
-      parameters: []
+      parameters:
+        - name: searchTerm
+          required: false
+          in: query
+          schema:
+            type: string
       responses:
         '200':
           description: ''
@@ -1062,6 +1097,11 @@ paths:
           in: query
           schema:
             type: string
+        - name: searchTerm
+          required: false
+          in: query
+          schema:
+            type: string
       responses:
         '200':
           description: ''