--- product_id: 55208956 title: "Southwire Tester NCVD - Detects AC Voltage with Audible & Visual Alerts - Auto Power Off - Dual Flashlights - CAT IV 600V Safety Rating" brand: "southwire" price: "€ 27.64" currency: EUR in_stock: true reviews_count: 13 category: "Southwire" url: https://www.desertcart.pt/products/55208956-southwire-tester-ncvd-detects-ac-voltage-with-audible-and-visual store_origin: PT region: Portugal --- # Detects 100-600V AC Auto power off extends battery life Built-in dual flashlights Southwire Tester NCVD - Detects AC Voltage with Audible & Visual Alerts - Auto Power Off - Dual Flashlights - CAT IV 600V Safety Rating **Brand:** southwire **Price:** € 27.64 **Availability:** ✅ In Stock ## Summary > ⚡ Stay powered, stay protected — test smarter, not harder! ## Quick Answers - **What is this?** Southwire Tester NCVD - Detects AC Voltage with Audible & Visual Alerts - Auto Power Off - Dual Flashlights - CAT IV 600V Safety Rating by southwire - **How much does it cost?** € 27.64 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/55208956-southwire-tester-ncvd-detects-ac-voltage-with-audible-and-visual) ## Best For - southwire enthusiasts ## Why This Product - Trusted southwire brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Battery Saver:** Auto power off after 5 minutes means your tester is ready when you are—no dead batteries, no downtime. - • **Compact & Ready to Go:** Pen-style design fits easily in your pocket or tool belt, making voltage testing faster and more accessible. - • **Instant Voltage Detection:** Non-contact sensing from 100 to 600 volts AC keeps you safe and efficient on every job. - • **Top-Tier Safety Certified:** CAT IV 600V rating with UL and CUL listings ensures industry-leading protection on high-energy circuits. - • **Dual Flashlight Convenience:** Illuminate dark panels and tight spaces effortlessly with built-in bright flashlights. ## Overview The Southwire NCVD is a pen-style non-contact AC voltage tester that detects voltages from 100 to 600V with audible and visual alerts. Featuring a built-in flashlight and an auto power-off function to extend battery life, it meets CAT IV 600V safety standards and is UL/CUL listed. Compact and reliable, it’s designed for professionals who demand quick, safe voltage verification in any lighting condition. ## Description Nearly one in two new homes built in the United States contains our wire, and we produce half of the cable used to transmit and distribute electricity throughout the nation. More than half of the world’s refined copper passes through one of our SCR systems, our tools & equipment business continues to grow, and our wire plays a key role in the manufacturing of other products, including automotive wiring harnesses and electrical motors. Southwire is a family-owned company operating in a globally competitive industry. As owners, we are proud of the company’s legacy and good standing in the community. Southwire’s success is rooted in hard work, social responsibility and innovation, and we believe that sustaining these core values is vital to the company’s future. Review: Works Great! Makes Life Much Easier! - 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. Review: Much more sensitive than other devices. Just what I was looking for. Has an ok light. - 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. ## Features - Southwire Pen style voltage tester - AUDIBLE AND VISUAL INDICATION of AC voltage from 100-600V AC - INCREASED BATTERY LIFE: the auto power off feature increases the battery life by powering off after 5 minuets of inactivity - Green LED indicates tester is ready for use - BUILT-IN FLASHLIGHT: this non contact AC voltage detector features a built-in flashlight for user convenience in dim lightingQUICKLY checks for the presence of live voltage on outlets; wiring; circuit breakers; lighting fixtures and switchesCAT IV 600V SAFTEY RATING; UL and CUL listedNot designed for use with Tamper Resistant (TR) outlets ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01M24N714 | | Best Sellers Rank | #29,475 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #24 in Voltage Testers | | Brand | Southwire | | Brand Name | Southwire | | Color | Green,Red | | Customer Reviews | 4.7 out of 5 stars 2,094 Reviews | | Global Trade Identification Number | 00032886963025 | | Included Components | TESTER, NCVT 40116N | | Item Dimensions | 1 x 1 x 1 inches | | Item Type Name | Southwire 40116N AC Non-Contact Voltage Pen Tester, NCVT Detects 100-600VAC, Non-Contact Voltage Detector with LED Flashlight, 6' Drop Test Rated | | Item Weight | 0.16 Pounds | | Item dimensions L x W x H | 1 x 1 x 1 inches | | Manufacturer | Southwire | | Measurement Type | Voltmeter | | Minimum Operating Voltage | 100 Volts (AC) | | Model | 40116N | | Part Number | 59992040 | | Power Source | Battery Powered | | Specification Met | Cul Listed | | Style | Southwire 40116N Non-Contact AC Voltage Detector | | Style Name | Southwire 40116N Non-Contact AC Voltage Detector | | UPC | 032886963025 032886963032 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 104 Degrees Fahrenheit | | Warranty Description | 2 Years | ## Product Details - **Brand:** Southwire - **Color:** Green,Red - **Item Weight:** 0.16 Pounds - **Power Source:** Battery Powered - **Style:** Southwire 40116N Non-Contact AC Voltage Detector ## Images ![Southwire Tester NCVD - Detects AC Voltage with Audible & Visual Alerts - Auto Power Off - Dual Flashlights - CAT IV 600V Safety Rating - Image 1](https://m.media-amazon.com/images/I/41D1lFQNkpL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: How to replace batteries?** A: At the end of the name 'Southwire' is a small recess. Push in with pin or pencil point and pull the back of the tester out exposing the circuitry. Roll the tester over opposite the pocket clip and the two AAA batteries are exposed. **Q: Does this model make a different tone on nuetral and hot? Its hard to tell which review goes to which model.** A: The 40116N only produces one tone when it detects AC Voltage. **Q: Is this product made in the USA?** A: No…. It says in description - product origin China **Q: The tester I received is defective. I am either needing replaced or a refund. I have purchased this product before and am generally satisfied.** A: Souethwire and will be free of defects in material and workmanship (“Defects”) for 12 months following ship date, under normal use and regular service and maintenance ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works Great! Makes Life Much Easier! *by B***N on April 22, 2026* 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. ### ⭐⭐⭐⭐⭐ Much more sensitive than other devices. Just what I was looking for. Has an ok light. *by M***R 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. ### ⭐⭐⭐⭐⭐ High quality tool at an inexpensive price *by B***1 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. ## Frequently Bought Together - Southwire Tools 40116N NCV Detector 100-600V AC - Southwire 40022S Receptacle Tester; Black - Southwire 40150N Advanced AC Non Contact Voltage Tester Pen; Dual Range 12-1000VAC/100-1000VAC; Non Contact Voltage Detector with LED Flashlight; 6' drop test rated; and IP67 waterproof; NCVT --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/55208956-southwire-tester-ncvd-detects-ac-voltage-with-audible-and-visual](https://www.desertcart.pt/products/55208956-southwire-tester-ncvd-detects-ac-voltage-with-audible-and-visual) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-06-12*