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

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Customer Questions & Answers

15 Questions37 Answers

Customer Questions & Answers

Non-Contact Voltage Tester
Non-Contact Voltage Tester

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This question is from Non-Contact Voltage Tester
 
5 answers

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

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August 7, 2016
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Answers (5)

September 30, 2016
Answer: 
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 Read More
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. Read Less
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Asked by
New Hampshire
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Home Improvement Profile: DIYer
September 27, 2016
Answer: 
Yes, this is idiot proof. Simply insert it into both slots in the outlet, one at a time. No beep=no electricity.
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Asked by
New Hampshire
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Home Improvement Profile: Professional
August 9, 2016
Answer: 
Hey dibs, Good question! Knowing your limitations is the first step in keeping safe. As long as you keep yourself from touching live energized parts and conductors, you should be fine. Around the home and shop it has many uses. It only works with AC or Alternating Current. So it should not be used for the downleads of a PV (Photovoltaic) array or the current found in a car. That is DC or Direct Current. Read More
Hey dibs, Good question! Knowing your limitations is the first step in keeping safe. As long as you keep yourself from touching live energized parts and conductors, you should be fine. Around the home and shop it has many uses. It only works with AC or Alternating Current. So it should not be used for the downleads of a PV (Photovoltaic) array or the current found in a car. That is DC or Direct Current. If you want to check for a tripped breaker or blown fause at an outlet, place the probe in the narrow of the two receptacle slots as that is the hot side of a 120 Volt outlet. I always remembered it as "wide is white" or neutral. This is not the case for a 240 Volt outlet as BOTH slots may be hot. Running it along the cord works too. It only picks up the hot, or "live" wire. I use it for miniature decorative lighting to check where the bad bulb is. Sometimes I have to reverse the polarity of the string so to keep the hot side running in series with the bulbs and not on the return side. NEVER use it to check downed power lines. The voltages on those can be in the thousands and will literally jump out at you!! So in general, it can help you to be safe! Hey, if my apprentices can learn this stuff, you can too! Pick up a book or go online to find some electrical training. I have been doing this stuff since the 70's and I am still learning. Read Less
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Asked by
Chicago
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Home Improvement Profile: DIYer
August 8, 2016
Answer: 
It prevents dangerous situations. When dealing with electrical wiring and outlets (and fixtures), this tool will indicate if there is electricity in the wires. That is invaluable info for the home-owner, non-professional person. You must read the instructions, try the "test' each time, and protect yourself with it.
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Asked by
California
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Home Improvement Profile: Professional
August 8, 2016
Answer: 
Howdy dibs,
Anytime you are exposing yourself to working on live electricity there is a danger of harming yourself.
Being that this requires only being near the wires and outlets, it is safe to use for testing voltage.
Happy testing,
Coach Dave
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4 answers

how do i turn it on

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October 29, 2015
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Asked by
Savannah, GA, USA
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August 2, 2016
Answer: 
A small button on side near the sensor turns it on. The on off switch is the weak link of this tool. This tester is not designed to be dropped many times . Have gone thru 5 or 6 of these in the last five years, but when its working it is very good at sensing voltage
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Asked by
Atlanta, Georgia
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June 28, 2016
Answer: 
There is a very well constructed button that allows you to toggle it on and off very easily. I usually let it cut off automatically as you hear an audible alert when it auto shuts off.
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Asked by
Dalton, WI
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March 15, 2016
Answer: 
Push the button
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November 3, 2015
Answer: 
Press and hold the power button for ½ second, then release. Listen for single-beep sound and
watch for a steady green LED to illuminate in the tip of the tester.
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This question is from Non-Contact Voltage Tester
 
4 answers

dryer outlet testing

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September 6, 2015
Will the product test an electric dryer outlet if the prongs on the dryer cord are longer than the meter prongs. The meter feels like it is meeting resistance and I hate to force it into the outlet.
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September 30, 2016
Answer: 
You should not have a problem testing a dryer outlet. The design of the voltage tester will not allow you to push it into the outlet more than that short stub. That should be sufficient to get a reading although you may have to move the tester a little bit in the slot as the are quite large slots. Remember that on a dryer outlet that you should have 2 live slots and 1 neutral slot and 1 ground. Older Read More
You should not have a problem testing a dryer outlet. The design of the voltage tester will not allow you to push it into the outlet more than that short stub. That should be sufficient to get a reading although you may have to move the tester a little bit in the slot as the are quite large slots. Remember that on a dryer outlet that you should have 2 live slots and 1 neutral slot and 1 ground. Older style outlets will only have 3 prongs unlike the newer 4 prong grounded style. Remember this device only checks for live outlets and wires. It will not tell you the voltage. Read Less
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Asked by
Savannah, GA, USA
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August 2, 2016
Answer: 
It will sometimes detect voltage depending on how sensitive the tester is but most the time you will need to remove the dryer outlet or use a tester will longer leads. Remember this tester detects voltage and will get bleed over thru cords. It does not tell what voltage is present
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Home Improvement Profile: Professional
April 3, 2016
Answer: 
Some dryer, range, and industrial type receptacles have the contacts located deep inside enough that they are too far away to have the sensor pickup. Try moving it over the cord as it will only sense the "hot" conductors within it's insulation.
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September 9, 2015
Answer: 
The tip should fit easily into a regular outlet, perhaps you are dealing with a tamperproof outlet. This product cannot be forced into such a device. Klein Tools recommends that you consult an electrician.
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How do you use this?

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February 1, 2016
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?
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Asked by
Savannah, GA, USA
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August 2, 2016
Answer: 
The tester is rated for certain range of voltage. They make another tester just like this one but its voltage range is lower Remember this tester is only used to detect voltage on something you want to work on or trying to identify a possible problem with. It does not tell what voltage is present . It is a quick step to say voltage is present, do I need to turn off or get a tester that tells me what Read More
The tester is rated for certain range of voltage. They make another tester just like this one but its voltage range is lower Remember this tester is only used to detect voltage on something you want to work on or trying to identify a possible problem with. It does not tell what voltage is present . It is a quick step to say voltage is present, do I need to turn off or get a tester that tells me what voltage is present Read Less
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May 17, 2016
Answer: 
It works by reading the field produced by current. All you have to is first touch it to a cord you know has power- this will let you know tester is working.
Then touch cord (or wire) you want to very is live.
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February 9, 2016
Answer: 
The Klein Tools NCVT-1 will detect 50 to 1000 Volts AC. If you believe you are using the tester properly in this range, you may need to return it for a replacement. Please see the Warnings section in the instruction manual for conditions in which the tester will not or may not detect voltage.
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Customer Reviews

Non-Contact Voltage Tester is rated 4.5 out of 5 by 186.
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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