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Amazon.com: DTech RS232 to RS485 Converter, 2 Pack Bidirectional RS-485 to RS-232 Serial Adapter with Terminal Block for Industrial Long Haul Data Communication : Electronics
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Industrial grade isolated RS232 TO RS485 converter, magnetical isolation, 600W lightning-proof & anti-surge
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TINYSOME High Performance RS232 to RS485 Converter rs232 rs485 Adapter RS 232 485 Female - Walmart.com
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RS232 to 422/485 Serial Converter w/ ESD - Serial Cards & Adapters | Add-on Cards & Peripherals | StarTech.com
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