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Network Tone Generator

The fastest way to find cables in a crowded punchdown block.


Please call 877-877-2269 for a replacement product or part.
1 YEAR DoubleDiamond™ Warranty (Standard)

Product Features

  • Sends a tone along any 4- or 6-wire RJ-11 or 8-wire RJ-45 cable.
  • Use with the pen-size Network Tone Probe, an inductive receiver, which emits its locator tone when it touches the tip of the wire or even just the jacket.


  • Use the Network Tone Probe (TS155-R3) to trace the tone through the cable, wiring bundle, and wiring closet. Locate the other end of the cable when the Network Tone Generator applies a tone through the cable.
  • Tones travel up to 2000 feet (609.6 m), depending on whether the cable is a continuous run or if it connects to punchdown blocks, patch panels, or wallplates.

  • Tech Specs

    CE Approval Yes
    Connectors (1) RJ-45, (2) clip leads
    Indicators (3) LEDs for continuity and polarity
    Power 9-V batteries
    Size 3.8"H x 2.3"W x 1"D (9.7 x 5.8 x 2.5 cm)
    Weight 1 lb. (0.5 kg)
    This product works with:
    This product works with:
    • Network Tone Probe (TS155-R3)
    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.


    Double Diamond Warranty Diamond

    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 Network Tone Generator 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.