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Cable Length Meter with Tone Generation

Measure cable length, troubleshoot shorts, and trace wires.


35 In Stock
Same Day Shipping (before 5PM ET)
Extended Double Diamond™ Warranty Available (3 Additional Year)

*Required field

Product Features

  • Troubleshoots both new and existing lines.
  • Measures distance to opens or shorts.
  • Provides audible indicator for shorted wires.
  • Use with single- or dual-conductor 8–30 AWG network, coax, and telco industrial cable (not CATx).


  • Large LCD for easier reading in sunlight.
  • Measures copper or aluminum wires 8 to 30 AWG.
  • High voltage protection.
  • 12 preset and 12 programmable wire gauge settings.
  • Four selectable tones in tone generation mode.
  • Manage cable inventory by measuring length on spools.
  • Operation modes: AWG/mm, telco, network, coax, tone generator, ohms.
  • 9-V battery operation.

  • The Cable Length Meter is an easy-to-use, versatile, compact tester for industrial type or pair cable. Use it for measuring cable length or as a tone generator. The meter troubleshoots new or existing lines by measuring distance to shorts or opens, and shorts between lines. It also traces wires by generating up to four trace tones. It works on virtually any single- or two-conductor cable (not CATx) and enables users to find and repair existing cable problems or verify new installations quickly.

    The Cable Length Meter includes 12 preset and 12 user programmable wire gauge settings and offers four selectable tones when in tone generation mode. It also helps technicians keep track of cable inventory both in the field and warehouse by measuring length on spools.

    Tech Specs

    Cable Type Single- or dual-conductor, 8 to 30 AWG network, coax, and telco cables (Does not work with CATx.)
    CE Approval Yes
    Environmental Humidity: 10 to 90%, noncondensing
    Operating Mode AWG/mm, telco, network, coax, tone generator, ohms
    Operating Temperature 32 to 122° F (0 to 50° C)
    Power (1) 9-V battery
    Size 1.3"H x 3"W x 6"D (3.3" x 7.6" x 15.2 cm)
    Weight 0.72 lb. (0.33 kg) with battery and test leads

    * 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: $14.54

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $29.08


    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 Cable Length Meter with Audio Tone Generation comes with a standard 1 Year Double Diamond™ Warranty (Standard) 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.