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Async RS232 to RS422 Interface Converter - DB25 to Terminal Block

Convert async RS232 to RS422 at speeds up to 64 kbps with distances up to 4000 ft over CATx cables.

Item #:  Async RS232 to RS422 Interface Converter - DB25 to Terminal Block


Call 1300 734 455 for pricing and to place order.
Please Note: Once ordered, this product cannot be cancelled or returned for credit.
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*Price excludes GST

Product Features

  • Our basic RS232 to RS422 64-kbps converter.
  • Full-duplex operation over 4-wire lines.
  • Async (data leads) only.
  • Transmits data up to 4000 feet (1219.2 m).


  • Transmits data up to 4000 feet (1219.2 m).
  • Full-duplex operation over 4-wire lines.
  • Async (data leads) only.

Our popular RS-232 to RS-422 Converter provides reliable conversion at speeds up to 64 kbps. You can transmit data up to 4000 feet (1219.2 m) on the RS-422/485 interface - over 4-wire lines in full-duplex operation.

In RS-485 mode, select either RTS or DTR to enable the driver. Or set the driver so that it's always enabled.

The converter features DIP switches instead of DIP shunts for easy setup. It's intended for use with data signals, so if you need a converter that supports handshake and clocking leads, our techs recommend one of the RS-232 to RS-422/RS-449 Converters (IC456A-R5, IC456C-R5) in Related Items.

Tech Specs

This product includes: - (1) converter and attached power supply - (1) manual

* Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 1300 73 55 66.



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The Double Diamond Warranty is our no-questions-asked warranty that protects your Black Box® brand products* from faulty workmanship and defects.

During the warranty period, Black Box Network Services will repair or replace your faulty equipment at NO CHARGE!

Plus, get an Extended Double Diamond Warranty.

You can also extend your warranty or protect a previously purchased Black Box® brand product* for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 1300-734-455.

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