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

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

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

DC 12V 24V 32ch RS485 Modbus Controller RTU PLC DIN35 Rail Box Relay LED Driver

DC 12V 24V 1CH 3A Small Relay Board RS485 UART Serial Port Switch MODBUS RTU

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

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