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

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

Industrial Grade 4DO RS485 Relay Module DIP Switch Set Parameters Modbus RTU

VHF/UHF Radio RF UART RS485 Wireless Transceiver Board Modbus RTU Master-Slave

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

RYR408B 8CH DC 12V 24V Modbus Relay Module DIP Switch Set Parameters

mini DC 12V RS485 Delay Relay Module Modbus-Rtu Uart Switch Board for CCTV Cam

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