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Southwire 40126N NCV Non-Contact Voltage Dual Range Pen Type Detector with Flashlight; 24-600V AC

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$17.98

$ 8 .99 $8.99

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About this item

  • Southwire Pen style voltage tester
  • AUDIBLE AND VISUAL INDICATION of AC voltage on two ranges: 24 to 600v and 100 to 600v
  • QUICKLY CHECKS for the presence of live Voltage on outlets; wiring; circuit breakers; Lighting Fixtures and switches
  • BUILT-IN FLASHLIGHT: this non contact AC voltage detector features a built-in flashlight for user convenience in dim lighting
  • DUAL RANGE for low Voltage applications including thermostat wiringINCREASED BATTERY LIFE: the auto power off feature increases the battery life by powering off after 5 minuets of inactivityGreen led indicates power is on and tester is ready to useCAT IV 600V SAFTEY RATING: the flashing red LED and pulsating beeper indicate the presence of Voltage to make this task as safe as possibleNot designed for use with Tamper Resistant (TR) outlets


The Southwire 40126N dual range non-contact AC voltage detector 24-600vac quickly checks for the presence of live voltage on outlets, wiring, circuit breakers, lighting fixtures and switches. This non-contact AC voltage detector features a built-in flashlight for user convenience. The flashing red LED and pulsating beeper indicate the presence of voltage to make this task as safe as possible.


RICH O
2025-08-27 12:20:11
Works as Described.
Jim
2025-08-24 11:17:47
I bought this for the Flashlight, and the Tester. I found a Tester in a friend's home, made by Craftsman, the Craftsman doesn't work. The Southwire NCVT Dual 40126N appears to be a very similar model but updated.The Craftsman has no damage, save a little leakage from the Batteries that appears to have cleaned off without damaging anything. Noteworthy, the Southwire NCVT Dual 40126N has a label in the Battery Compartment that says "Battery Corrosion Will Permanently Disable Voltage Detection". Take Heed of that warning. If you use the batteries that come with it, be sure to change them promptly if dead, remove them if stored for an extended period, and change generously before the posted Expiration Date. Use New, Same Manufacturer, Non Date-Expired Batteries.The Detector has a beautiful Flashlight, save for one point, they used, at least in mine, a Blueish White LED, most of the plethora of LED Lights I have are more white. I compared it to 3 Pocket Flashlights that I have, 1 by Pelican, 2 by Streamlight. Despite the Southwire NCVT Dual 40126N Tester not being a Dedicated Flashlight, Southwire did a great job on the LED (other than color) and I actually prefer the Light from the Southwire NCVT Dual 40126N to the Pocket Flashlights that I tested it against.The Craftsman though mostly identical, used an Optic Window (flat glass, the term is Plano) for the LED, the Southwire NCVT Dual 40126N uses a Lens. Most Flashlights produce a Spot and Spill Area. The Spot, in the Center, the Spill extending out some distance around that at a much dimmer level. The Southwire NCVT Dual 40126N doesn't seem to have the Classic Spill Area, it's a well defined, well illuminated Spot/Spill or maybe a Spot without a Spill. Very Well Done Southwire.I am a Retired Industrial Electrician. These types of Testers are great for a variety of things, but none of them by any manufacturer should be relied upon if a Person Intends to Be In Physical Contact With The Conductor or Circuit Being Checked. A Volt Meter designed for the Voltage being used, and the Application, must be used to verify that the point to be Contacted is Electrically De-energized.Commonsense must be applied as well. I have seen a Digital Volt Meter with the Leads in Correctly, Meter On, Batteries Good, Set to AC Voltage on the Meter, Fail to Read 480V when we knew that 480V was present. Something happened within the meter, preventing it from reading the Voltage. Strangely Enough, a Southwire NCVT Dual 40126N Tester would have shown that the Wires were Energized, and could have been used as a Back-Up to the Meter. There's a Warning on the Southwire NCVT Dual 40126N that says "Test on Known Live Circuit Before Each Use". The same would have applied to the Meter I mentioned in this paragraph, as an Industrial Electrician, it should have been Tested on a Known Live Circuit as well.The Dual Sensitivity of the Southwire NCVT Dual 40126N is an asset, I have tried it on various Receptacles to Identify the Energized and Neutral Leads. On 100V+ the Southwire NCVT Dual 40126N goes into Alarm when the Tester is less than Approximately 2" from Device End of Charging Cords going to my Phone and Tablet, despite 120V not being present in the Cord. On the 24V+ Setting, it goes off about 6" from the Device, and 12" from the Power Strip Containing a Series of Charging Transformers. On the 120V+ Setting, I was able to Sneak it in to an Open Receptacle on the Power Strip and Correctly Check the Energized and Neutral Sides.Personally, I'm impressed. For use as a Flashlight, I carry it with my Pocket Pouch (yes, I am a Nerd). Since it's on my person, I have used it Spontaneously in a few Electrical Situations (one was an overhead Electrical Work Box, uncovered {I know, Code Issue], and a Nearby Switch. From the Hallway, the Switch Controls the Shower Light, but the power was actually for a light, never mounted on the Work Box, near the switch and they stole the power for the shower light, but I now know I can install a Light at the Location because it's controlled by the switch).I have other models of these NCVT (Non-Contact Voltage Tester), I am familiar with their use. I'll be using this mostly on 120V and for 24V Control Circuits for Air Conditioning. I'd recommend the product from what I've seen and been able to verify.
Ryan P.
2025-08-19 13:17:24
So far it works great, someone asked if it works with GFCI outlets, and it does, or at least on mine.
mog703
2025-08-10 19:50:43
After doing my research reading product reviews and searching the internet I came up with Southwire to be the company that offers the best quality for the lowest price. Of course, electrical testing equipment is not where you want to buy the very cheapest tool with reasonable reviews. I do trust reviews but realize these are just fellow shoppers with an opinion. I wanted to put safety first and go with a tool that has a long-standing reputation. There are a few suppliers to choose from. Some just too expensive and others still too expensive. I came up with Southwire, which i never before heard of, to be the brand I wanted to go with, and this particular tool did everything I needed and a little more. With an affordable price and solid reviews here and elsewhere it is, in my opinion, the best non-contact tester for your money. I have only used it on one project but along with double checking with my standard contact multimeter it did not fail the test. I feel safe and confident using this non-contact tester. Now that I have experienced this tool from this company a Southwire tool will be my first choice. That being said i will still research and compare but I doubt you will find a better tool at a lower cost. You learn quite a bit from researching before you buy but unlike myself a lot of fellow shoppers just don't have the time, I have to spare which is why I try and share my buying experiences with others. I am pretty sure the testers I find with the odd names will do the job but with some tools I would rather not take any unnecessary chances. If you are looking for a non-contact tester, I highly recommend this, or a similar tester made by this company. There are a few to choose from but this being able to test the lower voltages in addition to the higher voltages worked out the best for me.
Charlie
2025-06-21 09:14:32
Operates extremely well, but battery install is very difficult. Southwire has very responsive customer service.
Customer
2025-06-16 14:40:34
I can’t say anything I don’t like about this tester. I have used many in the past 15 years and this one is by far the best one and the only one I go to. I used to purchase this tester at Lowe’s which doesn’t carry this anymore. So Amazon is the only place I can find it. I bought a bunch because I only use. I travel a lot for work so misplace it some times. The 120v feature is great when digging in to boxes with live wires. The other great feature is that you can use it for 24v. I have used this to troubleshoot thermostats, pull cord, electric door strikes, ect. The light is super helpful as well.
Boppercat22
2025-05-27 12:41:44
Used while installing a recessed light in my bathroom...just wanted to make sure I didn't electrocute myself. The pen worked like a champ...extremely easy to use. Watched a couple of YouTube videos first to make sure I understood it's capabilities and operation. Very pleased.
contessa
2025-05-26 18:37:09
My husband put lights over out kitchen island and used this product to make sure of the wires worked the way they were supposed to
nostromo
2024-11-29 17:41:52
ligero y confiable cumplio con lo que se esperaba a un bajo precio
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