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Async RS-232 to RS-485 Interface Converter - DB9 to RJ-11

Convert async RS232 to RS485 at speeds up to 115.2 kbps with distances up to 4000 ft. over CATx cables.

Item #:  Async RS-232 to RS-485 Interface Converter - DB9 to RJ-11


Call 877-877-2269 for pricing and to place order.
Please Note: Once ordered, this product cannot be cancelled or returned for credit.
Call for Pricing
*Price excludes GST

Product Features

  • Transmit data up to 115 kbps or at distancesup to 4000 ft
  • Point-to-point or multipoint applications
  • 2-wire half-duplex or 4-wire half- or full-duplex
  • Async (data leads) only
  • Up to (32) RS-485 devices can be attached to create a large multi-drop network
  • The RS-485 driver is automatically enabled during each spacing state on the RS-232 side
  • The RS-232 connector is DB9; the RS-485 connector is RJ-11
  • Built-in silicon avalanche diode surge protection
  • Two internal 4-position DIP switches


Convert async RS232 to RS485 at speeds up to 115.2 kbps with distances up to 4000 ft over CATx cables. These devices are great for connecting RS232 devices into an existing RS485 environment in factory automation, building automation, and process automation.

Tech Specs

Maximum distance for this converter depends on cable and data transmission rates. This product works with: - CAT5 100-MHz Solid-Conductor Cable, 4-Pair, Straight-Pinned - CAT5 100-MHz Unshielded Solid-Conductor Bulk Cable, 2-Pair

* Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 1-877-877-2269.



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During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

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