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PC Adapter USB for Siemens SIMATIC S7 200/300/400 PLC, 6ES7972-0CB20-0XA0 Equivalent, EZSync503 – Serial Connections Made Easy
Industrial Grade USB-RS485 RS422 RS232 Signal Converter FTDI Chip Isolated Module USB TO RS232/422/485 Magnetic Isolation
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USB to RS485 Serial Port Converter Cable | AMSAMOTION
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