Underground Wire Locator Upgrade, RockyMars Cable Tester for Invisible Fence for Dogs, Circuit Breaker Finder, Electric Fence Wire Tracer, Wire Break Locator, etc.

(729 Reviews)

Price
$46.99

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Quantity
(40000 available )

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33 Ratings
22
5
1
1
4
Reviews
  • nate blasa

    Greater than one week

    This was well worth buying. I used it to find multiple breaks in my invisible dog fence. It doesn’t point you to the exact spot of the break, but the noise gets very weak and dies a couple of yards before the break. Good enough to help you find the line and then carefully dig along it until you find where it broke. I have 15 acres, and the signal got very weak the further along I went, but it almost made it half of the perimeter. Very pleased. I also liked that this model didn’t have the rechargeable battery. I hope I won’t need it again for a while, and a rechargeable battery could be useless after a couple of years with no charging.

  • Michelle F

    > 3 day

    Instructions were great and easy to follow. We purchased to trace irrigation control valve wires that are 18-24” below grade. The sensor was not able to find 80% of our wiring.

  • Mrs. Joy Parker II

    > 3 day

    Cant even accurately locate a wire above ground consistently. Absolute junk. Not even worth 1-star. Retiring asap.

  • Harry S

    > 3 day

    I used this to find a break I had in my robot mower perimeter wire. It made the job quick ans easy. Less than 5 minutes to locate and repair the wire. Before I had to follow the wire around and look for where the wire was broken, sometimes difficult to locte.Now it is easy.

  • Tony Broome

    > 3 day

    I purchased this product to locate a break in my invisible fence for my dog. This system will not locate the wire past about 250 linear feet. The audio signal gets very weak and becomes impossible to hear. I dont know whether this particular system is faulty or the product will not perform as advertised, but I am very disappointed.

  • Pam White

    11-06-2025

    After 24 years of service our underground dog wire for electronic fence had to be replaced. There was one section underneath the driveway that had to be spliced, as it was blacktopped after the fence was put in. Initially we could not find it but with the help of this product we did. My husband said it was worth purchasing it for this alone. Im sure there are many other applications also.

  • Brett Prince

    > 3 day

    Easy to set up and use. Easily found the breaks in our underground wire for an easy fix. 100x better than the useless cheap one I bought last year. Sounds make it clear when you are over the wire. Just go slow.

  • JHS

    > 3 day

    This thing found a break in my guidewire for my Landroid in 2 min, which would have taken me hours to find.

  • Daniel R Marshall

    > 3 day

    Works well..there was some feedback since my dog fence wire was twisted in one area. But I found where the signal was weak and that was the break.

  • Jenny J

    Greater than one week

    Not as advertised. Ended up hiring a service because our break was approximately 300 feet from house. The range advertised (2400 ft) is grossly overstated; it was sensitive to a 4 inch deep wire only within 90 feet of home (origin of box).

RockyMars NF-816 underground wire locator is designed to allow the user to track low voltage cables used for garden and landscape automatic watering systems, and also low voltage garden lighting systems. It can also be used to trace other metal cables. The system uses a "transmitter” to send a signal down the cable beingtraced or to a solenoid valve that is being located. A "receiver" is then used to pick up the signal and follow the cable or locate the coil.

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