2 Channel RS485 Relay Board UART Serial Port Switch Module Modbus Remote Control for PLC Smart Home DC12V
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2. MODBUS command mode (A5 = ON), you can control a variety of ways: Serial Hyper Terminal Control (need to manually add the CRC), Modbus Poll software control (software automatically add the CRC), PLC or MCU process control
1. DC 12V control circuit,Wiring diagram below. "LOAD" may be camera,LED lights, fans, motors and other DC 12V equipment
2. DC 12V motor reversing control, Wiring diagram below. "LOAD" can be Fans, motors, pumps and other DC 12V equipment
4. DC 1-48V OR AC 85-265V control circuit,Wiring diagram below(Note:If not DC 12V load, need another DC 12V power supply). "LOAD" may be Machine tool ,CNC,3D Printer,LED lights, fans, motors and other DC AC equipment
1 x 2 Channel RS485 Relay Board UART Serial Port Switch Module
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