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Your cart is empty.Make the Southwire 40116N AC non-contact voltage (NCV) pen tester a valuable addition to your tool bag. Use it whenever you perform electrical work to identify where voltage is present. Detects voltage in wires; light switches; circuit breakers; outlets and light fixtures. Press the On button and the detection tip glows green. Move the detector tip close to the electrical wire or device being tested. If voltage is detected; the detection tip will change from green to red and begin flashing. The NCV will also beep loudly. The 40116N can also be inserted directly into electrical outlets to verify operation. All Southwire non-contact voltage detectors come with a built-in focused LED flashlight so you can illuminate dark areas. Auto power off feature helps conserve battery power. As an added safety feature; the 40116N has a low-battery self test which periodically checks the condition of the batteries. If battery voltage becomes too low; the self-test circuit turn off the non-contact voltage detector until the batteries are replaced. The 40116N is UL listed. Not designed for use with Tamper Resistant (TR) outlets.
Horrible quality, ruined work
Reviewed in the United States on February 20, 2025
I'm a master electrician and independent contractor. I REALLY like this tick tester. I've tried them from all the major brands, and I like this one the best.
paul verstraete
Reviewed in the United States on February 20, 2025
like it better than fluke or milwaukee
Slyn
Reviewed in the United States on January 4, 2025
An appliance installer told me about this handy gadget so I ordered my husband one for Christmas. He does some occasional repairs around the house and has found this tool very useful. It stays in his toolbox so he'll have it nearby all the time.
Matthew R
Reviewed in the United States on January 3, 2025
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.
B. Goodman
Reviewed in the United States on January 24, 2025
I like it a lot better than the one I had already. It's simple and clear. Just an on/off switch; the tip lights green when it's on/red when it senses voltage. None of the 47 bells and whistles I don't need or want.It could be better in 2 ways, for my money. I wish it was bright orange or yellow; brown and black is practically camouflaged. And the flashlight should have an on/off switch instead of a momentary switch.
B8001
Reviewed in the United States on December 18, 2024
I've owned a few of these inexpensive non contact voltage testers and this is by far the best and most reliable one I've tested and used. I haven't used or tested the Klein or Fluke models, but I honestly don't have any interest in even trying them now that I found one that I like that works well and is inexpensive.
Doug Follett
Reviewed in the United States on December 12, 2024
I've had a couple of these and they both felt mediocre and I was never comfortable with the readings. This one feels like a real tool, like it's not going to break in a week and it has a very positive response, both sound and light. I went with their cheaper model but it doesn't feel cheap.
Kickin'Kajun
Reviewed in the United States on November 9, 2024
I received exactly what's in the picture and it works exactly as it should to detect live circuits. Detects high voltage and low voltage! The light is great I just wish you didn't have to hold the button down for it to stay on.
Diana L.
Reviewed in Mexico on August 28, 2022
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.
Erick Arturo
Reviewed in Mexico on August 30, 2021
Hasta el momento, no hay ningún inconveniente en cuestión de su desempeño, ya con más de 2 meses de uso continuo y algunas caídas, (no más de 2mts) sigue en buenas condiciones de funcionamiento. Recomendable, buena relación calidad - precio.
Farmer Boy
Reviewed in Canada on March 23, 2021
Economical safety tool. Works good and easy to use. Device has to be quite close to live circuits to consistently detect them. Solid build.
Manuel Ramirez Servin
Reviewed in Mexico on March 13, 2021
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.
Victor du Plessis
Reviewed in Canada on March 11, 2020
Much better than the Klein tester. I’m an residential electrician and this works great. Great value for money
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