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8 Port RS232 RJ11 Data Broadcast device

RS232 data received into the Master Port is regenerated and transmitted out eight Distribution Ports.


Limited Quantity In Stock
Typically Ships within One Week
Extended Double Diamond™ Warranty Available (3 Additional Year)

*Required field

Product Features

  • Send async data to as many as eight printers, terminals, PCs, plotters, or other slave devices.


  • All ports are DTE/DCE switch-selectable.
  • Put one between your async CPU and up to eight terminals. Students see everything on your screen.
  • Ideal for polling applications or other controlled environments.
  • DB25 model is rackmountable and enables you to connect each port directly and quickly to slave ports.
  • Use RJ-11 version in modular wiring environments. Order an optional RJ Adapter Kit to connect it to premise DTEs equipped with DB25 connectors.

  • Tech Specs

    Connectors TL158A-R4: (9) DB25 F; TL159A: (9) RJ-11
    Flow Control Software only, transparent to speed and data
    Interface RS-232
    Power 115 VAC, 60 Hz
    Protocol Async
    Size TL158A-R4: 2.3"H x 12.2"W x 11.1"D (5.8 x 31 x 28.2 cm); TL159A: 1.5"H x 5.5"W x 8.5"D (3.8 x 14 x 21.6 cm)
    Speed Transparent
    User Channels 8
    Weight TL158A-R4: 8.3 lb. (3.8 kg); TL159A: 2.4 lb. (1.1 kg)
    NOTE: The TL159A is not rackmountable.

    These products work with:
  • Standard RS-232 Low-Noise Cable, 25-Conductor (ECM25T, ECM25C)
  • RJ-11 (4-Wire) Modular Cable, Straight-Pinned (EL04MS)
    The TL158A-R4 also works with:
  • Rackmount Bracket (TL486)
    The TL159A also works with:
  • RJ-11 Adapters (FA252–FA253)
    Questions? Contact our FREE Tech Support.

    * 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.

  • Support

    Application Diagram


    Double Diamond Warranty

    Extended 1 Year Warranty Available

    Protect your purchase with an additional 1 Year Double Diamond™ warranty!
    Cost: $30.40

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $60.79


    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 8 Port RS232 RJ11 Data Broadcast device 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.