Actionable code to control the BT22A16 Bluetooth Relay Board
After much trial and error, I've manage to find the command that work with these relay boards.
"AT+A1" = Relay 1 Toggle, "AT+A2" = Relay 1 On, "AT+A3" = Relay 1 Off,
The letter change to represent the relay: AT+A* = Relay 1, AT+B* = Relay 2 and so on