Model # NCVT-1SEN

Internet #100661787

Store SKU #780066

Klein Tools Non-Contact Voltage Tester
0092644690013

Klein Tools

Non-Contact Voltage Tester

  • Non-contact voltage technology for the discovery of voltage
  • Accurate test readings for use at the shop, job site, and home
  • High-quality electronics, heavy-duty polycarbonate plastic resin
$16.98 /each

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Product Overview

The Klein Tools Non-Contact Voltage Tester uses non-contact voltage detection technology for the detection of voltage in cables, cords, circuit breakers, lighting fixtures, switches, outlets and wires. The tester provides accurate test readings for use at the job site, in the shop and at home. This tester features high-quality electronics and heavy-duty polycarbonate plastic resins for a state-of-the-art construction that is comprehensive, reliable and durable.

  • Non-contact voltage technology for the detection of voltage in cables, cords, circuit breakers, lighting fixtures, switches, outlets and wires
  • Accurate test readings for use at the job site, in the shop and at home
  • High-intensity, bright green LED shows when the tester is operational and helps illuminate the workspace
  • Bright red, high-intensity LED and warning tone provide notification when voltage is detected
  • High-quality electronics and heavy-duty polycarbonate plastic resins for state-of-the-art construction that is comprehensive, reliable and durable
  • Digital on/off power button for easy control
  • Automatic shutoff provides long battery life by conserving power
  • Low-battery indicator lets you know that power is running out
  • Includes 2 carbon zinc batteries
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Customer Questions & Answers

How sensitive is this tester? Do you have to actually touch the insulation for it to register. I'...

How sensitive is this tester? Do you have to actually touch the insulation for it to register. I'm hoping it is, so that if there is a bundle of wires in an electrical box, I can find the live ones easily.
Asked by: BrianK9
I noticed that it has to actually touch a wire or be about a quarter inch or closer to a contact with AC.
Answered by: Firecracker
Date published: 2017-01-07

How dangerous is this to use and can a person without electric knowledge use it?

Asked by: dibs
As far as electrical tools go, this is about as safe as they come. But you should be aware that the point of this tool is to detect live wires, switches or outlets. So that means you would be using it on live wires, outlets, circuit breakers, etc. It is tool to help you work more safely. It is not foolproof and you must have an awareness of its limitations. There are a lot of great homeowner reference books out there. and lots of info on the internet too. Do a little reading before you tackle your project. I would recommend having a knowledgeable person with you as you start to think about working on some simple projects.
Answered by: AverageGuy
Date published: 2016-11-13

How do you use this?

It turns on just fine (green light) but when tested on a couple of things with known voltage, it did not turn red. What am I doing wrong?
Asked by: Arlene
First turn on the probe. There is a button along the side . Second. take the probe an put the pen like end next to a cord that's plugged into an outlet. It should flash red and make noise if its got power. If its flashes red and there is no sound hit the power button again. Third. You can use this probe to see if anything has electricity a switch, circuit breaker, outlet it an excellent safety device.
Answered by: SPJ
Date published: 2017-01-11

Does it work on DC circuits?

Asked by: rbandersen
No. The device states that it works on 50 to 1000 volts AC.
Answered by: Firecracker
Date published: 2017-01-07
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Customer Reviews

Non-Contact Voltage Tester is rated 4.5 out of 5 by 215.
Rated 5 out of 5 by from Can't go wrong This was my third similar volt tester. First time with the Klein brand. The other green one I had did not last a year. The Klein tester was a few bucks more than the others. I love it and am glad I was not being cheap. The nicest thing is the tester has a audible warning device. Turn it on and it beeps. Turn it off and it beeps twice. Hit a hot wire and you get a steady tone. I have been bit by a hot wire before because the battery had run out in the old tester. This is no longer an issue. As long as you get the beep when turning it on, you can count on being safe.
Date published: 2016-09-27
Rated 2 out of 5 by from I should have either gotten a more expensive model or a different brand. From the beginning it wa... I should have either gotten a more expensive model or a different brand. From the beginning it was a little finicky. It would beep and flash for no reason. I didn't pay it much mind until it started to give me a lot of false negatives and and positives. I would put it next to wires I knew had no power running trough it and it would beep and flash red. Once it even beeped and flashed red when touching my skin. It came to the point where I felt it was pointless to use it. Now I ordered the Milwaukee 2203-20 10 Volt 1000 Volt 10V 1000V Voltage Detector Dual Range LED. I'll see if this one is any better. I would suggest paying the extra $5 bucks or whatever for the next tier hoping it should be better. I did like the fact it had a silent mode and the noise it makes is quite audible.
Date published: 2016-11-12
Rated 5 out of 5 by from Works great. This device is pretty simple. Turn it on and place it near wires to determine whether or not live current is flowing. RED means danger! Green means wire is dead. Simple to read. Unit auto powers off in case you forget to turn it off yourself. Simple to use.
Date published: 2016-08-30
Rated 5 out of 5 by from A must have tool in every toolbox This non-contact voltage tester is very easy to use, highly accurate and durable. I bought it to replace a less expensive model and the difference is amazing. Definitely worth spending the extra money. I mostly use it to make sure the power is off before changing outlets and switches. I also use it to test power cords when something doesn't work. I've saved thousands of dollars by diagnosing that a device isn't working because the power supply or power cord is faulty and simply replaced it rather than buying a whole new product or making an expensive service appointment. I highly recommend using this device and specifically the Klein brand.
Date published: 2016-04-05
Rated 5 out of 5 by from Simple to use, slim design great for getting into switch and outlet boxes if needed Simple to use, slim design great for getting into switch and outlet boxes if needed
Date published: 2016-11-01
Rated 1 out of 5 by from Piece of junk. The tester is not sensitive enough to detect outlet power. The only way I could ge... Piece of junk. The tester is not sensitive enough to detect outlet power. The only way I could get it to work is to pull a plug slightly out of the outlet and then touch the tester end on the bare prong. I will be taking it back to Home Depot for a refund. I bought a cheaper brand from Lowes that does the same thing. I thought Klein would be a better product but I guess not. I have an old no name model from 20 years ago that still lights up. It just doesn't beep anymore. Wanted a newer one that would provide an audible signal. Can't anyone make a decent product? Another fine product made in Mexico.
Date published: 2017-01-04
Rated 1 out of 5 by from I bought this because I respect the klein name. Hand tools are great. This tester was more than... I bought this because I respect the klein name. Hand tools are great. This tester was more than a dissapointment! I took it out of the package and turned it on. It correctly detected the first hot wire in the panel. But then it would not detect any others, including the 250 volt, 200 amp main feed to the panel. I don't mean to nitpick but, with an advertised range up to 1000 volts, shouldn't it be able to detect than kind of voltage. It didn't even detect it when I touched it to the lugs of the main feed. It did detect about 1/2 of the other hot 20 amp circuits in the same panel. This is more dangerous than flipping a coin. I have returned this piece of junk. Good bye to klein tools, I will not be buying any more.
Date published: 2016-12-09
Rated 1 out of 5 by from Not reliable. To many false readings. Not reliable. To many false readings.
Date published: 2016-11-08
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