The BLACK BOX® RS-232 to RS-422/RS-485 Opto-Isolated Converters transform unbalanced half- or full-duplex RS-232 signals to balanced half- or full-duplex RS-422 or RS-485.
An 8-position DIP switch on the converters enables you to select baud rate, 2- or 4-wire mode, echo, and termination. The transmitter is controlled by data or RTS.
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