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4 Channel 5V Relay Module - Wiki
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Relay module circuit diagram
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![4-Channel Relay Driver Module - OSHWLab](https://i2.wp.com/image.easyeda.com/histories/53f55b965ab74b169211eb3c0dc3f35e.png)
4-channel relay driver circuit and pcb design
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![4 Channel Relay Module Circuit Diagram](https://i2.wp.com/arduinolearning.com/wp-content/uploads/2017/01/4-channel-relay-schematic.png)
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4 channel relay
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![1 relay module schematic - IOT Wiring Diagram](https://i2.wp.com/protosupplies.com/wp-content/uploads/2017/12/Relay-Module-1-x-5V-Schematic.jpg)
1 relay module schematic - IOT Wiring Diagram
![4 channel relay - OSHWLab](https://i2.wp.com/image.easyeda.com/histories/0db74a9b0cef4ec386a1daab47d56c9b.png)
4 channel relay - OSHWLab
![4-Channel Relay Driver Circuit and PCB Design](https://i2.wp.com/circuitdigest.com/sites/default/files/circuitdiagram/4-channel-relay-driver-module-circuit.png)
4-Channel Relay Driver Circuit and PCB Design
![[Solved] How to properly use a relay module with JD-VCC from Arduino](https://i2.wp.com/i.stack.imgur.com/vEePb.jpg)
[Solved] How to properly use a relay module with JD-VCC from Arduino
![4 channel relay module with opto - OSHWLab](https://i2.wp.com/image.easyeda.com/histories/c1b6e05d776c472183c727d20335be9a.png)
4 channel relay module with opto - OSHWLab
![Arduino 5V relay module KY-019 - Steps2Make](https://i2.wp.com/steps2make.com/wp-content/uploads/2017/10/Arduino_KY-019_5v_relay_module_connections.png)
Arduino 5V relay module KY-019 - Steps2Make
![4-Channel Relay Driver Circuit and PCB Design | Circuit diagram, 4](https://i.pinimg.com/originals/b0/43/4c/b0434c93f2c2ad2f71efd658ab2a1f76.png)
4-Channel Relay Driver Circuit and PCB Design | Circuit diagram, 4
![4 Channel 5V Relay Module - Wiki](https://i2.wp.com/wiki.sunfounder.cc/images/9/95/4_channel_relay_PCB.png)
4 Channel 5V Relay Module - Wiki