1/2/4 Channel DC7-24V Relay Module Modbus Rtu Switch input output RS485/TTL UART

1/2/4 Channel 7-24V Relay Module Switch Modbus RTU Switch RS485 TTL

Modbus-Rtu 1/2/4 Channel 7V-24V Relay Module Switch Modbus RTU Switch RS485 TTL

Modbus Rtu 1/2/4/8 Channel 7-24V Relay Module Switch input output RS485/TTL UART

Modbus Rtu 1/2/4/8 Channel Relay Module Switch input output RS485/TTL UART

7-24V 2 Channel Relay Module Modbus RTU RS485/TTL Communication Input1038

7-24V 2 Channel Relay Module Modbus RTU RS485/TTL Communication Input4066

7-24V 2 Channel Relay Module Modbus RTU RS485/TTL Communication Input7767