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

8-24CH 4-20MA To RS485 Current Analog Input Collector Module MODBUS RTU Board

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

16CH DC 12V 24V Temperature Analog PT100 Resistance RS485 Collector Modbus RTU

RS485 Remote Control Switch DC 12V 24V 16 Input 16 Output PLC IO Expansion Board

16-48 DI NPN/PNP Digital Switch PLC IO Expansion Board DC Optical isolation Inpu

Mini Size IOT Remote IO Controller N4ROD08 Modbus Industrial 8 DO RS485 Relay

RS485 Bus Remote Control Switch UART Serial ports Relay Module Modbus RTU DC 12V