Just to mention a common hardware source.

[rin67630]

Hi your buck converter looks exactly like that one:

DKP6012 DC-DC CNC step-down module
Technical Parameters

Input voltage range: 10V to 75V
Output voltage adjustment range: 0-60V
Output current adjustment range: 0～12A  Output power:0-720W
Output voltage setting resolution: 10mV
Output current setting resolution: 10mA
Power Effect: CV less than 0.5% +10mV CC less than 1% +10mA
Load effect: CV less than 0.5% +10mV CC less than 1% +10mA
Output Ripple: < 50mVpp (Input 54V, Output 12V, Current 5A)
100Hz fluctuation transmission ratio: <1/10000
Typical efficiency: 94% (input 54V, output 30V, current 5A)
Voltage and current display accuracy: 10mV, 10mA
Voltage display error: ±1%+20mV
Current display error: ±2%+20mA
Response time: <50ms
Storage operation: M0 ~ M9 a total of 10 sets of parameter storage
Heat dissipation: Onboard radiator, air-cooled
Operating environment temperature: 0 ~ 40 °C
Storage environment temperature: -20 ~ 70 °C
Use environment: indoor use design, maximum humidity 80%
Size (length × width × height): 101 × 75 × 48 (mm)

Yeeco seems to be a seller name, I had to spend some time until I found your hardware under its usual name.
DROK is another reseller for these modules, being more common.

Apparently there is a "baby" version available as well:
DKP6008 DC-DC step-down buck module
with similar characteristics, just with 8A max current and only 65V max input.

[danieltroger]

@rin67630 Hey, FYI, I mentioned a couple of sources and versions in my nodejs library for these converters https://github.com/danieltroger/dcdc-lib

[bengineer19]

Thanks both. Will add some deets to the description to make it easier for people to find