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Cable Fault Finder Tester with Alligator Clips

Find faults in cables up to 2500 feet long.


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

*Required field

Product Features

  • Pinpoint cable faults and know how much cable you have left on a spool before beginning your pulls.
  • Identifies and locates the distance to an open or short in seconds.
  • Measures cable length in a box, on a spool, or in a wall.
  • Acts as a tone generator to trace hidden cable runs.


  • Measures voltage.
  • Features built-in library of 60 cable types.

  • Pinpoint cable faults and know how much cable you have left on a spool before beginning your pulls.

    Compatible with all common cables, this tester enables you to measure cable length and find faults in a cable up to 2500 feet (763 m) in length using Time Domain Reflectometry (TDR) technology. The tester even works with standard tone probes for tracing cable.

    Select the appropriate cable type and adjust the nominal velocity of propagation. Then attach the included test leads to the cable's conductors and press a button. The tester displays cable length or distance to an open or a short in less than two seconds!

    Wire voltage is continuously measured and displayed to warn you of an unsafe condition.

    Tech Specs

    CE Approval Yes
    Dimensions 7“H x 3.2“W x 1.4“D (17.8 x 8.1 x 3.6 cm)
    Distance (maximum) 2500 ft. (763 m)
    Length Accuracy ± 2% plus ± 2 ft. (with correct nominal velocity of propagation)
    Length Resolution 1 ft. (0.3 m)
    Power (4) AA alkaline batteries (included)
    Tracing Tone Frequencies 575 Hz, 997 Hz, 1 kHz, 7.82 kHz in (4) patterns
    Voltage True RMS responding: Range: 0–250 V (AC or DC); Accuracy: ± 3% plus 1 V
    Weight With batteries: 0.5 lb. (0.2 kg)
    Product Includes:
  • (1) MultiTool Cable Tester
  • (1) red test lead with alligator clip
  • (1) black test lead with alligator clip

  • This product works with:
    Product works with:
    • Network Tone Generator and Probe (TS151, TS155-R3)
    Questions? Contact 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

    Extended 1 Year Warranty Available

    Protect your purchase with an additional 1 Year Double Diamond™ warranty!
    Cost: $34.82

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $69.64


    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 Fault Finder Tester with Alligator Clips 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.