DC12/24V Multifunction 32 Channel Modbus RTU RS485 Relay Switch Board UART Port

DC 12V 32Ch RS485 Modbus RTU Multifunction Relay Module PLC IO Expanding Board

New DC 12V 8 Channels Ethernet Relay Module Network Switch Modbus Module

Waveshare Industrial Modbus RTU 8-ch Relay Module with RS485 Interface Multi

Waveshare Industrial Modbus RTU 8-ch Relay Module (B) RS485 Interface 7~36V

New DC 12V 24V 8DI 8DO RS485 Modbus RTU Relay Module Switch Control Board

New DC 12V-24V 8 Channel 8AI 8VI 4-20MA/0-10V to RS485 Current/Voltage

8DI-8DO Digital Input and Output Module Optocoupler Isolated RS485 MODBUS New