R421C32 DC12V 32 Channels Modbus RTU RS485 Bus Relay Module UART Serial Port Board for PLC LED Home Automation Door Lock
![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/H66f15423630f4f5798b5a51e66a56cb53/R421C32-DC12V-32-Channels-Modbus-RTU-RS485-Bus-Relay-Module-UART-Serial-Port-Board-for-PLC.jpg)
sku: 4000799824181
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$41.08
Shipping from: China
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