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4 DO 8 DI 220V 10A Relay industrial grade Optical isolate TVS Surge protection RS485 Modbus Module
4Channel Relay and 8 DI Control board, Smart Home Control, Relay Module,Modbus rtu RS485 interf interface
Specification and characteristic:
Contact capacity: AC250V10A,DC30V10A
Working power supply :DC 12V
Working current: 1A
Communication modes: RS485 9600, n, 8, 1
The modbus Register map & Operating instructions manual :