RS232RS485 – RS232 to RS485 converter | Ace Automation Europe
Amazon.com: DTech RS232 to RS485 Serial Converter Adapter with 4 Position Terminal Block for Industrial Long Haul Communication Data Supports 600W Anti-Surge : Electronics
RS-232 to RS-485 Converter, 2/4-Wire RS485,RS422, Multi-Drop, Termination Resistor,LCS-9485
Amazon.com: DTECH RS232 to RS485 / RS422 Serial Communication Data Converter Adapter Mini-Size : Electronics
RS-232 to RS-422, RS-485 DIN Rail Serial Interface Converter - Sealevel
Raspberry Pi - Industrial grade isolated RS232 TO RS485 converter