If you do not plan to use our manager boards to connect the SBC/microcontroller with the relay you need to wire yourself. 

We have made wiring examples for some of the most common here. 

Ask us if you wonder how to wire to other SBCs or microcontrollers.

Arduino Mega

Raspberry Pi Pico

 

Raspberry Pi 4B

ESP 8266

ESP32

Arduino Leonardo

Arduino Uno