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

1/2PCS 2 IN1 12 DIO Ethernet/RS485 Relay Switch Module Modbus RTU TCP/IP Network

32CH Modbus Relay IOT RS485 Network PC UART Industrial Control Switch Module DIN

8 Ch Analog Output 0-10V 0-5V AO Module RS485 Modbus RTU To Voltage PLC Remote

DC 12V 8 Channel Digital Input Module RS485 Modbus RTU Switch Acquisition Board

R413E16 16ch RS485 RS232(TTL) PLC Modbus Rtu Module IO Control Switch Board

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

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