This dual-channel relay module is engineered to safely and reliably interface with microcontrollers that manage higher-voltage or higher-current loads. It provides a dedicated 5 V supply for powering ...

Welcome to my quick review of an inexpensive 2-channel 5V relay module controlled via RS485 bus utilizing Modbus RTU protocol. As claimed by some online sellers, this easy-to-get Modbus RTU 2-Channel ...