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4 Channel 5V Relay Module - Wiki

4 Channel Relay Board Circuit Diagram

4-channel relay module circuit diagram 4-channel relay driver circuit

4 Channel Relay Board Circuit Diagram

4 Channel Relay Board - Electronics-Lab.com
![[DIAGRAM] Megasquirt Relay Board Diagram - MYDIAGRAM.ONLINE](https://i2.wp.com/www.electronics-lab.com/wp-content/uploads/2016/06/wiring-diagram.png)
[DIAGRAM] Megasquirt Relay Board Diagram - MYDIAGRAM.ONLINE

4-Channel Relay Driver Circuit and PCB Design | Circuit diagram, Relay