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 ...
The durable Arduino Opta micro PLC enables industrial and building automation. It integrates with existing machines, devices, and the modular Arduino ecosystem – from sensor modules to SOMs and ...
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