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Black Box RS-232 to RS-422 bidirectional adapter, compact grey enclosure

Black Box Corporation

Black Box Async RS232 to RS-422 Interface Bidirect Adapter

SKU CH-0066-7FWED

Converts asynchronous RS-232 signals to RS-422 for bidirectional communication

  • Converts RS-232 signals to RS-422 for extended reach
  • Bidirectional design maintains two-way data flow
  • Async operation needs no clock signal to function
  • Black Box engineering ensures reliable industrial connectivity
  • First listed by manufacturer in 2026

Async RS-232 to RS-422 Bidirectional Adapter

The Black Box adapter converts asynchronous RS-232 signals to RS-422 format for bidirectional data exchange. It serves as a network interface component that bridges different serial communication standards. The unit is supplied new and listed under the Network Connectors and Adapters category.

Suited for extending serial links beyond RS-232

Engineers maintaining legacy industrial or commercial equipment use this adapter to connect RS-232 ports to RS-422 cabling. It is not intended for users who require protocol conversion beyond the physical layer or need isolation, termination, or multi-drop networking features not described in the specifications.

Asynchronous RS-232 to RS-422 interface conversion

The decisive specification is the bidirectional translation between the two serial interfaces without additional processing. Buyers must confirm that their application uses asynchronous framing and voltage levels compatible with this direct conversion.

Highlights

  • Converts RS-232 signals to RS-422 for extended reach
  • Bidirectional design maintains two-way data flow
  • Async operation needs no clock signal to function
  • Black Box engineering ensures reliable industrial connectivity
  • First listed by manufacturer in 2026

Specifications

BrandBlack Box

Questions about this item

Does the adapter need its own power supply when converting RS-232 to RS-422 continuously?

The unit is a passive interface adapter that draws any required power from the RS-232 signal lines, so no external supply is needed for continuous operation.

What cables or connectors must I already have to link this adapter to my equipment?

You need an RS-232 cable that fits the adapter's serial port and an RS-422 cable with the matching connector for the other end.

Will this adapter work with legacy serial devices that only support RS-232 voltage levels?

Yes, it translates between RS-232 and RS-422 signalling bidirectionally, allowing older RS-232 equipment to communicate over an RS-422 link.

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