8DI-8DO Digital Input And Output module Optocoupler isolated RS485 MODBUS

8DI-8DO Digital Input and Output Module Optocoupler Isolated RS485 MODB

8-32 DI-DO PNP to PNP RS485 Modbus Rtu Remote IO Module DC 12-24V 300MA Output

16ch Full-duplex Transparent Transmission of Digital IO RS485 Modbus RTU Module

8 16 24 32 48CH Multifunction RS485 Remote IO Module PLC DI-DO expansion Board

1 PCS 8 Channel 12V 24V Relay Shield Module RS485 PLC IO Expanding Board

DC 12V 8 Digital to RS485 Acquisition Switch Board Modbus RTU TTL IO PLC Module

8 Digital Input Module RS485 Modbus RTU TTL IO PLC Switch Acquisition Board