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

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 24V 8AI-8DI-8DO Expansion Board RS485 Analog Collection Wifi Relay Switch

DC 12V 433M Wireless RS485 IO Point-to-Point Master-Slave RF Transceiver

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

32ch DC 12V 24V PNP NPN Input RS485 Modbus RTU PLC IO Switch Digital Collector

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