Zareba® Digital Fence Line Tester

Model #: DEFT-Z

9 reviews
0 5 4.2

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  • Measures Voltage on Any Type of Wire
  • Accurate Three Digit Read Out from .5 to 19.9 KV
  • Back Lit Display- Visible Readings Night and Day
  • Rugged Pocket-Size Case Made of Heavy Duty ABS Plastic
  • 9 Volt Battery Operation (Battery Included)
  • Service Experts Available To Answer Your Installation Questions

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Zareba® Digital Fence Line Tester

Get Accurate Three Digit Read Out from .5 to 19.9 KV.

Use our Zareba® Digital Fence Line Tester to measure fence line and fence charger voltage. This tester combines digital accuracy with ease and convenience. It measures voltage on any type of wire.

The rugged pocket-size case is made of heavy duty ABS plastic.

Features include: Accurate Three Digit Read Out from .5 to 19.9 KV.

  • Measures electric fence line voltage in kilovolts
  • Requires 9-volt battery (included)
  • Digital LCD display of test results for easy monitoring
  • Use with low impedance and standard duty energizers
  • Fits in jacket pocket or toolbox
  • 1 tester per package

Zareba® is the largest manufacturer of electric fence systems offering durable, reliable electric fence products for all of your animal fencing needs.


Zareba® Digital Fence Line Tester - Specifications

  • Accurate Three Digit Read Out from .5 to 19.9 KV
  • Measures Voltage on Any Type of Wire
  • Back Lit Display- Visible Readings Night and Day
  • Rugged Pocket-Size Case Made of Heavy Duty ABS Plastic
  • 9 Volt Battery Operation (Battery Included)

Disclaimer: Zareba® System does not endorse any information contained in product reviews. Please follow all label instructions for your specific use.

Most Recent Customer Reviews

Review Rate
Review posted on
December 19, 2015
Did not last By Pig Farmer
I have had this about two months and has already quit working. I use electric fence for my pigs so I am constantly checking it because of rooting. Even after replacing the batteries nothing. I purchased this on the old saying you get what you paid for, Not in this case. Still using the old light up one I have had for several years. Some time simpler is better.
Response From Zareba®
Susan : Consumer Relations Representative
At Zareba® we strive to provide our consumers with high quality items that can be used to easily install and maintain their electric fences. We apologize that this was not your experience.

Our products are covered by a one year warranty and we would be happy to offer additional assistance. Please feel free to contact us at 1-855-5-ZAREBA (1-855-592-7322). We look forward to learning more and working with you to make this right.
Review Rate
Review posted on
November 29, 2015
Perfect for my needs.... By GWade
Great product, easy to use, highly visible display even during bright sunlight. I echo the comments made in the other reviews. Recommend purchasing this model rather than their less expensive model RSVT8. You will be glad you did.
Review Rate
Review posted on
May 12, 2015
great while it works By
I run about 2miles of wire. Great tester. I disconnect gates until I find which run is bad., shows voltage drop on the plastic type wire. But it just quit working bought a replacement the next day. It is a very good tool to have.
Review Rate
Review posted on
April 22, 2012
good reputation - Originally posted on By
Zareba is a good name, but I have yet to use this item. So I assume that it will do its job when called upon.
Review Rate
Review posted on
February 3, 2012
Worth every dollar - Originally posted on By
Not being technical I wanted to buy something that was not complicated and easy to use. This instrument is everything and more. It is idiot proof and worth every dollar I paid for it. It is very economical as it switches itself off thus saving the battery. Superb product and great value for money.Highly recommended.
Review Rate
Review posted on
November 13, 2011
The Way to Go if You Really Wanna Know What Your Fence is Doing! - Originally posted on By
This is a great product that takes all of the guesswork out of setting up and maintaining an electric fence. With the digital display that reads out to 100 volts, you can detect and correct drains or poor connections in your fence system before they become a problem. It's reassuring to see how much voltage is actually on the wire at various points in the fence.MUCH better than the neon light type testers. Those are fine if you only want to spend $10 or want something that can bang around in your pocket without concern, but the digital tester is much easier to read and has greater resolution instead of to the nearest 500-1,000 volts like the neon testers.So far, min has worked out well, even gotten a little wet a few times and works fine. I think the lead could be a bit higher quality, but it does work.
Review Rate
Review posted on
September 10, 2011
Great fence tester - Originally posted on By
After using the testers with the little lights that are hard to see, this product has been much easier and faster to use. Well worth the money. Do be careful with the ground-prong because it won't stay attached long if you repeatedly jerk it out of the ground carelessly. Don't ask me how I know!
Review Rate
Review posted on
November 30, 2010
Know the electric fence\'s voltage - Originally posted on By
The electric fence works only with sufficient voltage in all areas. The Zareba tester tkes the guesswork out, and with it finding problems is easy. It would be nice to be able to measure fence voltage up to about 13 kV, but all the testers in the market stop at 10 kV.
Review Rate
Review posted on
September 13, 2009
Performs as described - Originally posted on By
This digital voltmeter works as decribed for up to about 10,000 V. Easy to use. My fence has pulses over 10kV and this was the best tools I found for assessing the actual voltage. My only complaint is the retailer send me an obviously used product (small crack in housing and bent probe tip) as a new one.
Read All Reviews (9) Write a Review
Q.How do I extend the grounding end of the tester. my fence is too tall to put it in the ground and touch the fence

The probe cannot be extended any further than the wire that connects it to the tester.

Q.If I am getting a reading on this meter over 6.00 is that electric fence hot enough to keep cattle out of my building site?

A reading of 6.00 on this tester indicates 6KV (6,000 volts).  We recommend a minimum of 2,000 - 3,000 volts on the fence line to contain most beef cattle. 

Q.Does this tester have a warranty?

Yes, it is covered by a one year replacement warranty.

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Tip #1


If you need expert advice on replacement parts and or troubleshooting, a Certified Repair Center is your best resource. Please contact us for in-warranty troubleshooting and repair authorization. For out-of-warranty, contact the location of your choice to determine rates. If you are shipping your unit, we encourage you to package it adequately and ship with a tracking number.

Look For A Certified Repair Center Near You »

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