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Your cart is empty.The Southwire Tools & Equipment 40150N is an advanced dual range non-contact AC voltage detector with a convenient work light. It features audible and visual indication of AC voltage on two ranges: 12 to 1000V and 100 to 1000V. Bi-color LED verifies tester is on and range selected, red LED and beeper indicates voltage is detected. The yellow LED light indicates that the tic tester is in low voltage mode. The non contact voltage tester features a rugged IP67 WATERPROOF and dust tight housing and features a built-in forward and rear facing flashlight for user convenience in dim lighting. With electricity safety is paramount so it features CAT IV rating at 1000V and is UL Listed. This unit is not designed for use with Tamper Resistant (TR) outlets. This unit is built to help electricians have a great indicator of live power. It features a pocket clip for easy access and storage and the low power feature will indicate when the batteries need to be changed. Testing a wire is very easy with this unit.
Reginald Chretien
Reviewed in the United States on February 8, 2025
Works. Great.
BobEaseShop
Reviewed in the United States on February 24, 2025
I got a Klein on of these and it failed on the first day. This has worked now for weeks. Nice item to make things safer. I did a review on YT: bobeaseshop
greg
Reviewed in the United States on January 9, 2025
This model has a light on both ends.Nice heavy build
Colton
Reviewed in the United States on September 4, 2024
This non-contact voltage tester is the most durable and reliable hot stick I've used, including ones from Klein, Fluke, Milwaukee, and other Southwire models. It is very sensitive and accurate, and extremely handy to use in troubleshooting situations. If you are about to work on something though, always use a multimeter to check because hot sticks are not always trustworthy; doesn't matter the brand.That being said the flash light on this thing is bright! The nice thing is the light stays on once you release the button, whereas other sticks you have to keep it held down. It also has a flashlight on the testing end too, so it helps light up inside the box you're poking around in. The water resistant rating is a nice touch too.The only problem I've had with this tester is the rear cap where you put the batteries. If you over tighten it, drop it from high up, or it just wears out, the cap may crack and prevent it from tightening on the threads enough to make contact with the batteries. That is the only thing that has caused me to replace it.The pros definitely outweigh the cons though, as this thing is definitely the most premium option out there. I highly recommend this tester to licensed electricians, or DIYers that like to own nice tools.
Randy W
Reviewed in the United States on August 24, 2024
This Southwire NCVT tester is great and it includes a 12V tester as well. Easy to use and well built. I highly recommend this tester.
Craving the outdoors
Reviewed in the United States on June 17, 2024
I've had several different brands of this type of electricity sensor and this is the most sensitive one out of the lot. Battery lasts a long time and it is durable. The only issue I had was battery leakage that damaged the last one which is not Southwire's fault.
Customer Review
Reviewed in the United States on October 10, 2024
I have been buying Southwire products for over a decade and appreciate the quality and functionality of their tools. I am a DIYer, but am actually very familiar with the primary OEM manufacturer of Southwire tools through another working relationship - and have seen firsthand the quality of their electrical measurement tools. Regarding this contactless low/high voltage tester:1) The low voltage measurement mode lights an "amber" LED that goes "red" and makes an audible beep upon proximity of a ~12V signal. You can see in one of my pictures that it correctly identified the low voltage DC signal between my speaker and amplifier.2) The high voltage measurement mode lights a "green" LED that also goes "red" upon proximity of a high voltage source (in this case 120V line voltage). The "red" LED is accompanied by an aggressive audible beep.3) There is "white" LED in the tip of the tool to help you home-in on the live wire if it's dark.4) There is ANOTHER bright "white" LED functioning as a capable flashlight on the back side of the tool that can be turned on with a button press.Overall, I am impressed by the simplicity, capability, and quality of this tool. I expect it to last a while. AAA batteries are easy to come by, but small enough to keep the tool compact for carry!
Alex soltero
Reviewed in Mexico on September 9, 2023
Excelente presentación, muy sensible al voltaje AC, la linterna es básica pero funcional, recomedado
Rafaqat
Reviewed in the United Kingdom on March 7, 2022
Good piece of equipment, very easy to use and well designed
DS
Reviewed in the United States on December 9, 2022
So the first one I got did not work for the low voltage. No yellow LED and it did not detect anything properly. I used in normal 110 mode and placed near my USB end of a cord and it beeped. I put it in 12 v mode and it beeped. Or maybe it was never in 12 v mode. Amazon replaced that one.The next one I get, I open the batter cover, nearly needed pliers to open this one, and it seemed awfully shallow area for the 2 batteries to fit in. I checked since it was so hard to get the end cap off. I slide in the first battery and it did not want to slide down all the way. There should be room for 2 AA batteries and one was not going in. I took that out and it seemed there was something inside. I tapped, shook and finally had to swing hard for it to come out. The pic here shows a very dented battery that is green and silver. The el'cheapos that come with are a brownish color. The packaging had not been opened, so this came from the manufacturer this way.After getting this one out, I put in the two batteries with no issues. I tested 110 more and it worked as expected. I put it in 12 v mode and it I got the yellow LED, but it did not defect USD 5 volt power. Not sure if this was user error or I have another non-working unit. I will update if I find this one will not work either.
Sabas Torres R.
Reviewed in Mexico on April 18, 2022
excelente producto muy buena calidad, la lámpara muy buena
GiL
Reviewed in Australia on June 19, 2021
It's looks tough compared to my other non contact voltage tester. Found only in Amazon, great product.
Warren
Reviewed in Canada on November 3, 2020
The Southwire 40150N NCV tester works as advertised. Removing the battery endcap for the first time was a bit confusing because the instructions had wrong information (it seemed to be referring to another tester). The flashlight comes in very handy; I use it much more often than I thought I would.
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