Features:

  • Automatically detects and indicates low voltage (12-48V AC) and standard voltage (48-1000V AC) allowing broad application
  • Non-contact detection of standard voltage in cables, cords, circuit breakers, lighting fixtures, switches, outlets and wires
  • Non-contact detection of low voltage in security, entertainment, communications, environmental control, and irrigation systems
  • High intensity, bright green LED indicates the tester is operational and aids in illuminating the workspace
  • Dual Range testing, select 12-1000V AC or 48-1000V AC
  • Auto power-off feature conserves and extends battery life
  • CAT IV 1000 Volt rating provides expanded operation and protection
  • Lightweight, durable polycarbonate plastic resin construction; convenient pocket clip
  • 9.8-foot / 3 m drop protection
  • Safety Rating: CAT IV 1000V
Highly recommended

Fantastic tool. Every service tech in the HVAC industry should consider this product. It is not much larger than a standard volt stick and it also gives you temperature. I now know if a motor is hot and if it is "hot".

The best features of two previous models

Being a homeowner DIY’er I thought I knew enough about tools to own most of the essential basic ones. I literally just found out about the existence of this type of device by reading an especially well-written setup guide for a wall switch. For years I’ve used one of those little plug-in polarity/GFI testers when I wire an electrical outlet to make sure it’s right. The same tester also gives me assurance that I didn’t forget to turn the circuit breaker off. But for wall switches and other wiring (especially in an older house that has wiring shortcuts) I’m never 100% sure that there isn’t a hot wire in that box or which one of those two identical black wires is the lead. Finding this tool isn’t just nice, it’s mandatory. As I shopped for the right tester the biggest selling model was a fraction of the price of this one from Klein Tools and I’m sure it would have worked just fine. But working with electricity isn’t the time nor the place to go low budget. I was attracted to this one primarily by the five LED’s that not only show you the presence of voltage but gives you an idea of proximity and strength, that plus it has a warning beeper for good measure. It is a non-contact type, which seems to be what the majority of them are. I wasn’t sure why that was important until I realized that it will work through wiring insulation, cable caps and with those switches where the wire is pushed into a hole in the back of the switch rather than attached to an exposed terminal. It makes a lot of sense you need a tester that doesn’t actually have to touch a bare wire to warn you of the presence of voltage. This model includes a built-in LED flashlight, partially contributing to its higher cost. The very last thing I need in my house is another flashlight and that almost turned me off to paying extra for it. Then I got to thinking about those real-life scenarios in which I’m working deep inside a terminal box and guess what, I had to turn the circuit breaker off which means none of the room lights around me work. Of course I need a flashlight and I only have two hands, so having the flashlight built into the end of the same tool I’m using to check for voltage isn’t just a convenience, it’s an important design feature. I’ve never owned anything from Klein Tools but I’ve always heard that they are one of the best brands. Did you know they were founded in 1857? That’s 22 years before Edison invented the light bulb. I'm surprise and disappointed that a company with such a highly regarded reputation is so lacking in a how-to-use owner’s manual. They show an illustration of the switch locations and how to replace the batteries but that's about it. I guess they assume someone buying this knows all about using it but they're wrong. They need to include a detailed tutorial on the proper use of what to do and what not to do in typical DYI use of a non-contact voltage detector. The tester, which combines the best features of the Klein NCVT-1 and NCVT-2 and adds more is surprisingly rugged feeling, it may be the first one I’ve owned but I’ve got a feeling it’s going to be the last one as well.

Great

I only played around with this but it seems to be working fine so far. I'm going to be using this on some Knob and Tube in a house that was supposedly rewired before it was sold. The 12-1000V is way too sensitive for me as it goes off within a one foot radius of an outlet or some device. I just leave it on the 48-1000V setting and it works fine. If you're like me and can't figure out how to change the sensitivity, press the button to turn it on. Then, hold the button until the light either turns blue or green. Blue is for 12-1000V and green is for 48-1000V. There's also a silent mode if you press and hold the button while it's off, the light will be green for the 48-1000V range. My only complaint here is that it beeps twice when you turn it off. Isn't the whole point of silent mode no beeps? It seems to be working fine so far in tests, will see what happens when I use it for a real world application.

The Difference Between The Emergency Room and a Successful Electrical Project

DISCLAIMER: Electricity can KILL you. I am the furthest thing from a licensed electrician. Please do not apply anything posted below to your expertise as I am not a professional. If you have questions about a project consult your local licensed electrician. I am a weekend handy man, and not a very good one at that. I don’t know much about electricity. I do know that there are things around the house that I could fix myself if I was comfortable with absolutely knowing that the power was off and I would NOT wake up in the emergency room. Ceiling fans for example, I’ve held off of new ceiling fans because I’m paranoid want to be SURE that there is no juice coming into the area I’m working on. Enter the Klein Tools NCVT-3 Non-Contact Voltage Tester with Flashlight. It was made for paranoid newbies like myself. Point to the desired area, if you get no beeps, you turned off the right breaker. While I’ll still turn everything off at the main, it’s comforting to be able to test the exact area that you are about to work on. There is no ambiguity here, the circuit is hot or not. And the Klein will let you know which that is. The build quality on this thing is fantastic. Being a Klein product I shouldn’t be surprised but this thing is well built. Has a little heft to it. It’s freaking waterproof and dust proof. It’s something that will be in your toolkit and working for a long time. An absolute steal price wise for a top of the line product. Shipping: for the first time ever a product I ordered from Amazon was lost in delivery. But once again Amazon steps in and overnights me a replacement and we’re all happy. For any retailers in the audience, that is how you retain loyal customers.

Just saved me from a shock! Buy it and know for sure that electricity out

In changing out a bathroom light fixture, I thought I had found the correct breaker as the light went out. The electrical box was never labeled so I found the breaker the old fashioned way (testing one by one until I found the bathroom light went out). Sounds simple, right?!? While I bought this tester for another project last week (it worked great for that one), a voice in my head told me to double check and verify no live wires with my new tester. The darn kept beeping when I put the tester to my bathrom light. I was sure it was broken when I put it to the electrical outlet that my bathroom light was connected to, as well as the bathroom light itself. Hesitant, I went and shut off a few more breakers for adjacent rooms, doing them one at a time, and sure enough, my tester went quiet when I shut off 2 more breakers. So 3 breakers were connected or had wires with my bathroom light!!!! This tester was a life saver and no doubt saved me a trip to ER. I have an older 1950s ranch home. Buy this. Be sure of your work. It will be in my toolbox always! Very easy to use. Plus made in USA.

Safety and Simplicity in one Device! High Quality Non-Contact Voltage detector from Klein.

I purchased this Klein Non-Contract Dual Range Voltage detector based on the quality brand name and reviews here on Amazon. I used this device when troubleshooting and replacing light fixtures around a very extravagant waterfall structure. Electricity and Water really don't go together, especially for me a novice weekend warrior/wanna-be electrician. After several hours of using this device, I really came to depend on its accuracy. I was able to complete the lighting rewire with complete confidence. I took on a separate project and wired in a new Irrigation Controller in place of one that had a failed LED display. This is a great device for indoor projects as well (ceiling fan wiring, etc). I almost forgot to mention the audible sounds it generates when it detects live voltage. I highly recommend this product. I make sure it is always packed in my toolset no matter what project I am working on. If you have found this review helpful, please select "Yes" below. Thank you and God Bless. Klein Tools NCVT-2 Dual Range Non-Contact Voltage Tester

Klein NCVT-2 Review

Klein NCVT-2. It works as advertised. Indicates "hot" wire amongst group of wires which is most important capability to me. Also indicates low voltage if you have that setting turned on. Theres 2 settings...one indicates both low and high voltage (12-1000), the other setting indicates high voltage only (49-1000V). To switch between settings is as easy as holding down power button for 2 seconds. The LED color in transparent tip indicates which setting you have selected (blue or green). I don't love everything Klein but do love this tester. fyi...difference between NCVT-1 and NCVT-2 models is that -1 only indicates high voltage and -2 indicates both low and high voltage.

Works Fine

I like the progressive LED display of low to high AC voltage and the audible alert is handy when you can't get a clear view of the LED display. The built in flashlight is a plus and the unit seems sturdy. I already dropped it about 5 ft on concrete with no damage. While it can discriminate between the hot and neutral side of an outlet, it is not a substitute for a plug in outlet tester to show reversed wiring, missing ground, etc. It was useful to me identifying live and abandoned knob and tube wiring. It is sensitive enough for work on 12V landscape lighting. These testers can only detect voltage on alternating current circuits, so this tool won't work for direct current systems such as those found in vehicles.

The Swiss Army Knife of Voltage Testers

Simple testers at half the price are much less confusing for basic live wire identification and trouble shooting. This sophisticated and flexible tester is much more sensitive than the basic testers, and it is also capable of confusing the inexperienced user. But, for an advanced user, it can trace and find breaks in every kind of wire path - from a USB power source, to a doorbell system, to an LED light fixture, all the way up to the wires coming into and leaving the circuit breaker panel. And, if you need to find broken or failed connections in existing wiring without tearing the walls apart, this could be just the ticket. Useful also if you need to add new outlets or switches in existing homes. Why? Because it is quite capable of tracing the paths of live wires behind walls. With it you can practically see through the wall by scanning along the surface with the tester held about an inch from the surface. To make sense of what the tester is indicating, you must have a basic notion of how electric wires are installed and routed inside the walls in a typical home. Also, to keep your sanity in the face of false voltage indications, you’ll need to develop the trick of “desensitizing” the tester by holding the tester with your finger resting near its tip to eliminate most false positive indications. Where you have LED lamps and dimmer switches, the tester can easily be fooled by the kind of electrical noise generated by these devices, but the finger method has worked well for me. Lucky for me to have discovered this trick, because I have many dimmable LED lamps in my house. All in all, for my advanced projects and puzzling electrical faults, this tester now holds a place of honor next to my venerable and reliable two dollar neon lamp tester.

Great customer service

I'm a lifelong customer simply for their outstanding customer service. Prior to this purchase, all fourteen items from my previous orders have been bulletproof. I purchased this dual voltage non contact voltage detector for home remodeling. It worked perfect for several months but then started activating on it's own. It would be sitting there with nothing around it (or touching it) when it would suddenly activate. I used this device a lot and appreciated the quality in detecting voltage. Since it had been bulletproof, I really didn't want to try to find a comparable brand. This device came in handy while I installing shelves with nearby switches. I used the voltage detector to get a general idea where the wires behind the wall were located. I contacted Kline via email, explained the problem and received a return authorization. I sent the item back and less than a week later, received a brand new device. I'm not sure if it's a lifetime warranty but with this level of "backing their products", I'll but a lot more of my tools from Klein.

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