DYKB DC 12V RS485 TTL RS232 Serial Port multi-function relay module UART Modbus Rtu Switch PLC PTZ Controller

DYKB DC 12V RS485 TTL RS232 Serial Port multi-function relay module UART Modbus Rtu Switch PLC PTZ Controller
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sku: 33014550511
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$5.08
Shipping from: China
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