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RS-485 Repeater

Extend your RS-485 network beyond 4000 feet—and add up to 31 more devices.


Please call 877-877-2269 for a replacement product or part.
Extended Double Diamond™ Warranty Available (3 Additional Year)

Product Features

  • Crystal-clear controller signal out to 4000 feet (1219.2 m).
  • Opto-isolation available.
  • Support RS-422 4-wire connection.
  • Details

    Your RS-485 devices or segments can reach well beyond their normal distance limit with BLACK BOX® RS-485 Repeaters. We even have an opto-isolated model (IC158A) to protect your lines from ground loops and other electrical problems.

    Tech Specs

    Flow Control Transparent
    Leads Supported Both ports: TDA, TDB, RDA, RDB
    Operation Half- or full-duplex
    Speed Transparent up to 128 kbps
    CE Approval Yes
    Connectors (2) 4-wire terminal blocks, (2) RJ-45
    Indicators Both ports: Power, Carrier Detect
    Power 115 VAC, 60 Hz (230-VAC, 50-Hz version on request)
    Size 1.8"H x 5.5"W x 8.5"D (4.6 x 14 x 21.6 cm)
    NOTE: These repeaters do not feature collision detection or hardware flow control.

    These products work with:
    • CAT5 100-MHz Solid-Conductor Cable, 4-Pair, Straight-Pinned (EYN737MS)
    Questions? Contact our FREE Tech Support.

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



    Double Diamond Warranty

    Extended 1 Year Warranty Available

    Protect your purchase with an additional 1 Year Double Diamond™ warranty!
    Cost: $12.00

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $23.99


    Double Diamond™ Warranty (Standard)

    Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

    The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

    The RS-485 Repeater comes with a standard 1 Year warranty already included.

    During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt 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 724-746-5500.

    * Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

    What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.