TOP R421C32 DC12V 32 Channels Modbus RTU RS485 Bus Relay Module UART Serial Port Board for PLC LED Home Automation Door Lock
![TOP 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/H817d9ef9a7654106934b2fc683b6d00fZ/TOP-R421C32-DC12V-32-Channels-Modbus-RTU-RS485-Bus-Relay-Module-UART-Serial-Port-Board-for.jpg)
sku: 4000804912930
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$43.41
Shipping from: China
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