Southwire Tester NCVD - Detects AC Voltage with Audible & Visual Alerts - Auto Power Off - Dual Flashlights - CAT IV 600V Safety Rating

Great unit. 5 stars. Very sensitive. It can give some short false postives but I am totally fine with that. I would rather have little short beeps than a false negative. (A false negative means there is no beep when there is voltage) If given the choice between really sensitive and not sensitive enough, I want really sensitive every time. The false postives are short little chirps and the real positives are a long string of beeps and lights flashing red. If you tap the tip on certain things you can force a very short false positive. (just like my beloved old unit) With this Southwire tester I can touch it to light switches and get an alarm. (with the cover on) Of course be careful and always test the wire before you work but I like the ability to sense from a distance too. Also test the unit to make sure it is working each time you use it. Before I bought this, I bought another brand, which I perceived as a top brand, and I paid more money but it was nowhere near sensitive enough. This Southwire unit is perfect. The price is amazing. I have a large DC adapter with a flat 3 wire AC wire feeding it. It does not beep on one side but does in the middle or the other side. I can't even say it is overly sensitive. It is just about perfect. If I had a potentiometer to set the sensitivity, I would lock it in place right where it is at. I lost my old unit that I had for many years. After buying another product that didn't work for me, I found some YouTube videos with reviews and decided this was a good choice. The light is just ok. It is powered by 2xAA batteries and has an LED. It is bright enough that you don't want it in your eyes. (you will see spots, don't ask me how I know this) The light is adequate for looking at wires in a box. That is just a bonus for me though. I have lots of bright flashlights. To power on the light, hold the red button on the end. To power on the unit for detecting voltage, hold the red button near the tip for a second or so. The tip will glow green while it is on. It flashes red and beeps when voltage is detected. (fairly loud) It can be turned off by single pressing the power button or you can let it time out. (a few minutes) It makes a different beeping sound when it turns off either way. So far I only wish that I had bought two of these. (keep one in a known safe place and use the other one) I believe I like it better than the one I lost.

It works, I like it, refreshing aftertaste.

I like this one better than the fluke 1ac. Plus I think it is more durable.

Nice little tool, only negative thing is that if you are testing something like a circuit breaker the tool will register power from a bad breaker because it is actually getting the positive reading from the breakers above and below the bad one. If you're testing for a current that has other sources of current right next to each other it's probably not the tool you'll want to be using.

Second one I’ve bought and they haven’t failed me yet! It has a quick reaction time and is accurate. Also has dual indication - light and prolonged sound. I haven’t had to replace any batteries and it automatically shuts off after some time, it’ll tell you it’s shutting off with a beep. Hot tip: Put a lanyard through the pen clip and put it around your neck so it’s readily accessible as you move around. I find if I set it down and can’t immediately find it, I can get lazy and don’t use it when I should. You regret that choice real quick

So far so good! Works nicely, bright light and loud tone.

After years of using multimeters to determine if a circuit is live, I finally decide to buy a non-contact voltage tester. Boy, am I happy that I did. The dangerous part of working on 110 V circuits is to try to get to the black (line voltage, hot wires) behind a light switch or plug, along with neutral (white). In my case, the yahoos who owned the house in the past did something beyond goofy, going into stupid territory. They spray painted the wires all white when they painted the walls. Now, imagine trying to probe the wires and not being sure what's what because they are all the same color! Even if it's different colors, there's always the risk of an electrical shock when you remove the wire nuts securing the connections. You're also holding the probes, plus the multimeter itself. If something slips, your instinct is to catch it, which means you might brush against a live wire. Having a NCVD makes life a lot easier. As always, test on a live circuit prior to each and every use, to make sure the tester still works.

I looked at several and watched a lot of reviews. This is the best bang for your buck and works great. Fits inside the front of a GFCI too. Very happy with this hot stick.

Lo compré para el trabajo de mi esposo y me dice que lo lleva a todos lados. Él es ingeniero de Servicio y le da un buen uso, siempre lo carga y dice que es de los mejores.

Economical safety tool. Works good and easy to use. Device has to be quite close to live circuits to consistently detect them. Solid build.

Excelente sensibilidad para detectar voltaje y muy facil de usar, en adición la lampara que posee es de gran utilidad. excelente producto, presenta un apariencia muy ruda y ya teniendola en las manos, efectivamente esta muy bien construida.

Seems to do the job..no issues..changed a two and a 3 pole smart switch. Definitely helped to have it..!!!

I can't believe how long I have gone without have one of these in my toolkit. This was the cheapest I could find and that how I like them. Clear loud beeps and LEDs make it easy not to get electrocuted.