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  • $155.54
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    • $166.99

    Black Box Async RS232 to RS422/485 Interface Converter - DB9 to Terminal Block (IC820A)

    • Item #: 9SIV04GKT37445
    • Mfr. Part #: IC820A
    • Enables you to select RS-485 2-wire half-duplex or RS-485 4-wire full-duplex operation.
    • Selectable RS-422 operation with transmit and receive always enabled.
    • Automatic RS-485 driver control, so it works without any special programming for handshaking signals. Also enables transmitter from RS-232 TD signal and receiver when not transmitting.
    • Built-in bridging switches for 2- or 4-wire operation with no external jumpers to set.
    • Set operating mode with four switches.
    • Converts using either port power or power from an external 120-VAC/12-VDC power supply (sold separately).
    • No external power is required if two RS-232 output handshake lines are available.
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    Black Box Async RS232 to RS422/485 Interface Converter - DB9 to Terminal Block (IC820A)

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