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

Rated 4.5 out of 5 by 150 reviewers.
Rated 1.0 out of 5.0 by I am a contractor and this is not a good tester. It did not work right out of the package. Pulled batteries out and one of the batteries had burst inside the chamber. Tried putting new batteries in and that did not work either. Would not recommend this tool. October 25, 2016
Rated 5.0 out of 5.0 by I bought two, so that I could give one to my niece. I showed her how to replace a bad light switch at her house, after checking for voltage. This is perfect for home use. October 26, 2016
Rated 5.0 out of 5.0 by 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. September 27, 2016
Rated 5.0 out of 5.0 by NON-CONTACT VOLTAGE TESTER The tester works exactly as the directions states. October 18, 2016
Rated 4.0 out of 5.0 by Good product. Over the years I have come across some really bad non contact voltage detectors. This is my second Klein. The first worked great and I am sure it is hiding somewhere around the house with the other good one I have (different brand). I have learned it is not a bad idea to test your voltage detector before you purchase. Sometimes you may find it is bad before leaving the store. Some less expensive ones can be pretty good, some are junk. If it beeps when you are a foot away from your wire, it really isn't much help. September 30, 2016
Rated 5.0 out of 5.0 by Great tool for the money! I bought this to replace several other testers of varying types (two leads, and non-contact) that I had used previously. This one was great. It tells you if there is power to a fixture or bare wires without any possibility of putting the leads on the wrong part. It is an essential safety item for any wiring projects. This model is pretty economical on batteries and shuts itself off in a reasonable amount of time. Highly recommend this product! October 3, 2016
Rated 5.0 out of 5.0 by voltage tester great product for testing low and high voltage. lightweight and useful. recommend! October 12, 2016
Rated 5.0 out of 5.0 by Professional Tool Excellent Tool. Very easy to use to check electrical circuit power. Helps assist to trace where the power is going. October 11, 2016
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