R421C32 DC12V 32 Channels Modbus RTU RS485 Bus Relay Module UART Serial Port Board for PLC LED Home Automation Door Lock
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![R421C32 DC12V 32 Channels Modbus RTU RS485 Bus Relay Module UART Serial Port Board for PLC LED Home Automation Door Lock](http://ae01.alicdn.com/kf/Ha87977ec443a4ad685d7b3fd6f3dc2e9D/R421C32-DC12V-32-Channels-Modbus-RTU-RS485-Bus-Relay-Module-UART-Serial-Port-Board-for-PLC.jpg)
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sku: 4000264964128
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$38.72
Shipping from: China
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