Waveshare Modbus RTU 16-Ch Relay Module RS485 Interface Multiple Isolation

9568, KBVF Digital Interface Module, ModBus, RS-232 & 485.

RS485 Relay Module Modbus RTU Protocol Remote Control PLC Expansion Board

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

12-36V RS485 Isolated Repeater Hub 2-port Comm.Isolation Module Signal Amplifier

Serial Server RS485 to Ethernet Port DTU Module Modbus TCP/HTTP EE11A

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

RS485 to 4-20MA 0-20MA Current Signal Generator DAC Converter Module Modbus RTU