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20 Channel RS485 Relay Switch Digital Analog IO Module Modbus RTU PLC UART Expanding Board 4-20MA Current 0-10V Voltage Read

USD 23.11USD 25.12

20 Channel RS485 Relay Switch Digital Analog IO Module Modbus RTU PLC UART Expanding Board 4-20MA Current 0-10V Voltage Read

Description
Specification
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