Moxa’s serial-to-serial media converters can convert between RS-232, RS-422, and RS-485, which avoids compatibility issues that are often encountered when communicating between different serial interfaces.
Port-powered RS-232 to RS-422/485 converters with optional 2.5 kV isolation
Port-powered RS-232 4-channel isolator
Industrial RS-232 to RS-422/485 converters with optional 2 kV isolation
Industrial RS-422/485 converters/repeaters with optional 2 kV isolation
Entry-level RS-232 to RS-422/485 converters