Wi-Fi 4I/O 4DO 4DI android phone control Network RJ45 relay Modbus-TCP module smart home

Wi-Fi 4I/O 4DO 4DI android phone control Network RJ45 relay Modbus-TCP module smart home

Please check the video:  https://youtu.be/BTrf6Cyydg4

*4 ways switch panel is just a demo for understanding easy, don't include. 

We  can use the extend port (5+ R5- R6- R7-) as a 3 NPN pins digtal output port,

Or as extend port for connect 3 loads more, example solid state relay, Optocoupler relay,AC contactor etc. 

For secondary development please check the manual for the protocol.

The wifi card is  pouplar HLK-RM04,recive the Hexadecimal code from the upper machine