4X R421C32 DC12V 32 Channels Modbus RTU RS485 Bus Relay Module UART Serial Port Board For PLC LED Home Door Lock

4X R421C32 DC12V 32 Channels Modbus RTU RS485 Bus Relay Module UART Serial Port Board For PLC LED Home Door Lock
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sku: 1005005642792020
$147.70
Shipping from: China
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