DORHEA 12Pcs MAX485 Transceiver Module TTL UART Serial to RS485 blue

12Pcs MAX485 Transceiver Module TTL UART Serial to RS485 Instrument blue

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12 PCS MAX485 Transceiver Module TTL UART Serial To RS485 Instrument Adapters

WWZMDiB Mini USB to TTL Serial Converter Adapter, 3.3V/5.5V, FTDI Blue

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12Pcs MAX485 Transceiver Module TTL UART Serial to RS485 Instrument Interface...