With ethernet relay IOT has become so easy. RLY-8-POE-USB is aPOE&USB controlled8 channel relay controller based on STM32. With this module users can be able to do remote control/switching power supply centralized management the purpose of this product can be directly by net POE power supply switch power supply is connected to the Internet so you just need to a cable link equipment suitable for: home decoration hotel shopping mall management Internet cafes karaoke time daily office stores monitoring networking industrial control equipment test equipment power control unattended underground pipes mining equipment ships machine room street lamp management intelligent management and centralized management.

This new version Relay-8 module has support JSON now please check network communication protocol.