Amazon.com: Customer reviews: Klein Tools NCVT-2 Non Contact Voltage Tester, Dual Range Pen Voltage Detector for Standard and Low Voltage with 3 m Drop Protection, yellow and red

Top positive review

This is a great safety tool

Reviewed in the United States on August 22, 2016

This is a great safety tool. I installed a ceiling fan and a thermostat in the same day so I was able to use he dual functionality. It is simple to switch from the different setting and you always know which one your on by the blue or green light. It is not as sensitive as previous non contact testers I have owned. For this one I had to very close to the wire casings to get a read. I live in an 80 year old house so he electrical is a mess. I used this to follow the numerous wires coming in and out of the box to know which one was going to the switch versus the box. I could get some wires through the walls but this was not always consistent but this could be due to thicker plaster walls. I doubt his would have problem reading throug drywall. I think the is actually safer so you don't get false positives. There were numerous times during the installation that the detector powered off by itself to save battery but was simple to just tap the button and it was right back on. This thing is sturdy too. Not going to lie I dropped it few times (just like every tool I own) and did not have a worry in the world that it was going to break. Well built and does he job. This is worth the extra few dollars compared to the cheap versions of non contact detectors.

3 people found this helpful

Top critical review

Critical reviews›

Mark

Crapped Out

Reviewed in the United States on October 8, 2023

It is overly sensitive ( when it worked) and is difficult to switch between voltages, low and high, without turning it off. It no longer works on High voltage. I didn't use it very much, but I will use another brand like Fluke. Save your money and buy something more reliable.

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From the United States

Craig V.

This is a great safety tool

Reviewed in the United States on August 22, 2016

Pattern Name: TesterVerified Purchase

3 people found this helpful

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fmwardalot

This works great...even detects 24VAC on my doorbell wires.

Reviewed in the United States on December 3, 2017

Pattern Name: TesterVerified Purchase

Great tool for the electrical toolbox. I have been doing electrical work for decades, and never had one of these...always used a test light because I was never sure of non-contact testers. I figured I'd order one of these to try.

Much to my surprise, the thing works really well! It has 2 sensitivity levels. On low voltage sensitivity, it can detect 24VAC transformer voltage on my doorbell through the wire. I was curious of it would pass that test, and it did. On High voltage, it did not detect 24VAC, but not expect to do so. On high voltage, i.e. normal 110 VAC, it easily detected hot circuits in receptacle without removal, and detected GCFI hot disconnected and connected. On the low voltage setting, on a GCFI, if you stick the end into the hot side, it detects voltage with either the GCFI on or off, on high voltage, it only detected when the GCFI is on. Very cool.

I tired it on a lamp wire, just to see if it would detect 110 VAC through a lamp wire... it does. Cool.

This is much more convenient than a test light or voltmeter. For any normal electrical work, not diagnostic where voltmeters and amp clamps are required, this will be very useful to check for voltage before working on any circuit.

4 people found this helpful

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riverguy

Does what you expect a professional-quality tool to do.

Reviewed in the United States on June 26, 2019

Pattern Name: TesterVerified Purchase

Turns out it was a good thing when I misplaced my old hardware-store brand-x voltage tester. Shortly after I bought this replacement, I found the old one I had been using for years and I used it to check a circuit for some outdoor wiring that was no longer working right. It showed no hot circuits, so I pulled the wiring out of the junction box and removed the wirenuts for some more specific tests. Placing the old tester directly on the bare wires gave me a HOT reading! The tester should have told me that before I removed the wirenuts. I went back to my shop and got the Klein tester and tried it where I tried the old one, on the direct-burial Romex outside of the box, and it showed hot everywhere. Bottom line: I could have gotten lit up when touching those wires that the old tester told me were dead. Just to make sure, I tested the old against the new in half a dozen more places on that outdoor circuit and got inconsistent reports from the old one and consistent ones with the new one. An inconsistent voltage tester is worse than no voltage tester at all, and I've been using that thing for years! Anyway, the Klein tester is well made and works great, just like every other Klein tool I own does.

3 people found this helpful

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John Clapham

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

Reviewed in the United States on October 23, 2016

Pattern Name: TesterVerified Purchase

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

368 people found this helpful

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JMK

Great’

Reviewed in the United States on April 5, 2024

Pattern Name: TesterVerified Purchase

Low voltage for Christmas lights and auto. It’s a Klein!

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Wingnut

Superb Non Contact Voltage Tester

Reviewed in the United States on April 23, 2017

Pattern Name: TesterVerified Purchase

I originally thought this tool was a novelty type device, good to have but probably wouldn't use it much, boy was I wrong. I'm in the HVAC trade and I find that I usually grab this tester first before I pull out the Fluke. However, this device is no substitute for a quality meter, so don't bet your life on it. I use it as an initial walkup, see where we're at tool before I pull out the meter. The tool with beep and flash red at the tip when your close to something live. Again when it comes to high, most likely going to kill you voltage, I leave it in my Veto TP4.

This is the Non-Contact device I've owned, but I think Klein did a really good job with it. It works very well and I wouldn't hesitate to purchase another.

Edit(11Mar2018) I no longer carry this. It's very easy to build trust in it and forget to change the batteries which is a recipe for a bad day. Yep, I experienced it by failing to heed my own advise, don't trust your life to this around high voltage. Not going to detract a star because it does work well, but you better keep the batteries fresh. For me, this tool isn't in my bag or even on my van, it's at home.

3 people found this helpful

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Bogie

Very Easy for Even the Novice

Reviewed in the United States on August 13, 2016

Pattern Name: TesterVerified Purchase

Let me say right off the bat that I am a female novice and electrical makes me nervous. Usually I hire out anything, but feel it is silly to do so for minor jobs, especially since I am kind of off the beaten path and would have to pay for hours of travel time for a short time here. My accomplishments so far have been moving an existing light box (to center with new sink) and install a timer switch on an existing bath fan switch.

Months ago a ceiling fan/light had quit working; this is one that isn't used often but with the hot weather lately (and no AC), I'm ready for a useable fixture. I couldn't figure out which breaker to turn off using my usual tool (with socket/plug inserts and detector "pen" that runs along breakers to signal which is correct). I was afraid it was the wiring in the ceiling, which would not be pretty to get to. I turned the whole house breaker off to remove the old fan/light, and it seemed as if that least one wire might have become unattached, but I couldn't be for certain (I don't know much about electrical and it makes me nervous, so I err on the side of super caution). Soooo, I did a couple of minutes research, ordered this Klein tool based on how intuitive it was and ease of the signals it gave.

When the tool arrived a couple of days ago, I opened it up, put the directions to the side (hey, I work two jobs so don't get much sleep - I just wanted to see if it was easy), turned it on (batteries included), and found that it is easy to use and understand for my purpose. I'm happy to report the ceiling wiring is fine - or at least has power running thru when the switch is flipped (whew!). When I am ready to put up the new fan/light, I will read the directions just to make sure I don't miss something (remember, I'm a novice) and the Klein tool will be in use to make sure the wires are dead (and I will write down which breaker it is).

26 people found this helpful

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James P.

Never knew I needed one of these...until I did

Reviewed in the United States on January 1, 2021

Pattern Name: TesterVerified Purchase

I’m not an electrician. I’m just a simple rancher and firefighter. My beautiful bride wanted to swap out some light switches in the new house on the ranch. She called it an upgrade, but the lights still come on when ya use the new switches just like the old (which were new) ones did. I guess the new flatter switches just look better to her, and honestly, that’s good enough reason for me. Anyway, I was talkin to another rancher who used to used to be an electrician and he recommended I get one of these to check the circuit before swapping the switches out. I sure am glad I listened to that fella! I guess those guys that wired my new house weren’t none too picky about correctly labelin the breakers. This thing let me know whenever a line was hot. It did it’s dang job and saved me at least once from touching a hot line. It lets out a clear tone and lights up whenever you touch it to a hot line. This here voltage tester is now a permanent resident in my toolbox!

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Noob

Nothing

Reviewed in the United States on October 1, 2023

Pattern Name: TesterVerified Purchase

It does what it is supposed to do without complications.

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Kiera O

Saved me from a couple shocks - but also throws errant beeps

Reviewed in the United States on June 16, 2019

Pattern Name: TesterVerified Purchase

I've just started doing electrical work in my home and picked this up to be safe. There have been a couple different instances where I flipped a breaker that should have covered the wiring I was working on, only to discover that no, actually, there's still a live wire nearby. Very, very glad to have had this tester!

The only annoying thing is that it will often give errant beeps - it seems like bringing it near any outlet, even one with no electricity flowing through it, will cause it to give off a single beep or so. This has given me some scares, but fortunately it's not difficult to tell the difference between a false alarm and a real one. The errant beeps come in singles or doubles, they don't last, and it's always in the slow-beep mode that indicates low-voltage (as opposed to the much faster beeps indicating 120v).

I highly recommend getting one of these for anyone doing any kind of electrical work - it's the best double-check you could ask for.

2 people found this helpful

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Klein Tools NCVT-2 Non Contact Voltage Tester, Dual Range Pen Voltage Detector for Standard and Low Voltage with 3 m Drop Protection, yellow and red

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