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Klein Tools NCVT1P Voltage Tester, Non-Contact Low Voltage Tester Pen, 50V to 1000V AC, Audible and Flashing LED Alarms, Pocket Clip

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Availability: In Stock.
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Arrives Saturday, Mar 21
Order within 2 hours and 43 minutes
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Style: NCVT


Pattern Name: Tester


Features

  • NON-CONTACT DETECTION of AC voltage in cables, cords, circuit breakers, lighting fixtures, switches, non-tamper-resistant outlets, and wires
  • CLEAR INDICATION: Bright LED illuminates green to indicate tester is operational and flashes red and emits a beeping alert when voltage is detected
  • BROAD APPLICATION with a 50 to 1000V AC power detection range
  • CONSERVE BATTERIES with auto power-off function
  • LIGHTWEIGHT AND DURABLE compact design with a convenient clip fits securely in pocket; 6.6-Foot (2 m) drop protection
  • TRUSTED SAFE with a safety rating of CAT IV 1000V
  • RECOMMENDED for non-tamper-resistant outlets; For tamper-resistant outlets, use Cat. Nos. NCVT-2P or NCVT-3P in low voltage mode

Description

Klein Tools Non-Contact Voltage Tester detects standard voltage in cables, cords, circuit breakers, lighting fixtures, switches, non tamper-resistant outlets and wires. A bright green LED indicates the tester is powered on. It changes to red and an audible tone sounds when voltage is detected. For more than 160 years, Klein Tools has manufactured premium-quality, professional- grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857.

Brand: KLEIN TOOLS


Power Source: Battery Powered


Style: NCVT


Color: Green,Red,Yellow


Item Weight: 22.68 g


Brand: ‎KLEIN TOOLS


Power Source: ‎Battery Powered


Style: ‎NCVT


Color: ‎Green,Red,Yellow


Item Weight: ‎22.68 g


Item dimensions L x W x H: ‎5.5 x 0.72 x 1 inches


Min. Operating Voltage: ‎50 Volts


Specification Met: ‎Cat Iv 1000v


Upper Temperature Rating: ‎60 Degrees Celsius


Measurement Type: ‎Voltmeter


Maximum Operating Voltage: ‎1000 Volts


UPC: ‎092644693700


Manufacturer: ‎Klein Tools


Global Trade Identification Number: ‎00


Product Dimensions: ‎5.5 x 0.72 x 1 inches


Item Weight: ‎0.8 ounces


Item model number: ‎NCVT1P


Batteries: ‎2 AAA batteries required. (included)


Is Discontinued By Manufacturer: ‎No


Date First Available: ‎July 23, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Mar 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Easy to use and works really well
Style: NCVT Pattern Name: Tester
This device is GREAT. Put the two AAA batteries in (came with it). I also watched the video. Used it today as I needed to replace a basic light switch. Came in VERY handy. I also have been watching my dad use his old two-wand test meter from the 1970s. This is SO MUCH EASIER and it works!!!!!! When the line is hot, the red light goes on and you get a warning noise. If the line is cold the device light remains green. Just told my daughter to buy this for my dad for Christmas. ... show more
Reviewed in the United States on December 7, 2025 by Kindle Customer

  • Quality voltage tester
Style: NCVT Pattern Name: Tester
Great little tester. Durable, long lasting battery, easy to use, and works great. Not a cheap unit, and easy to read voltage meter .
Reviewed in the United States on December 27, 2025 by patricia

  • Professional grade accuracy—don't trust your life to the cheap stuff!
Style: NCVT Pattern Name: Tester
I upgraded to the Klein NCVT1P after my generic tester kept giving me ghost readings. This tool is much more precise; it only alerts when I’m actually near a live wire, rather than just in the general area. The 50V to 1000V range is perfect for home DIY, and the bright green LED gives you peace of mind that the batteries are actually working before you start testing. ... show more
Reviewed in the United States on March 2, 2026 by Kris Garner

  • better than many
Style: NCVT Pattern Name: Tester
better than many, ease of use, ALWAYS TEST BEFORE USE!!!!
Reviewed in the United States on February 23, 2026 by stephen Desmond

  • Unshockingly Good
Style: NCVT Pattern Name: Tester
I don't like getting electrocuted and want to check circuits every way possible. I trust Klein tools. Solid, well built, and reliable.
Reviewed in the United States on January 26, 2026 by Texsox

  • Big improvement over my old one
Style: NCVT Pattern Name: Tester
Power switch on my old sensor from a different brand was the clip sliding back and forth. It never worked right, and you couldn’t tell if it was on or off. This one has a power button and lights up green when it’s on, and flashes red when it detects voltage. Audible alert is loud enough for my deaf ears to hear it. Glad I got this one. It fixes all of my complaints about my previous one. ... show more
Reviewed in the United States on February 26, 2026 by Wes

  • Simple Safety
Style: NCVT Pattern Name: Tester
Simple safety tool. Nice to have in your pocket. Works great. A good brand
Reviewed in the United States on February 9, 2026 by Wmatkinson

  • Works great
Style: NCVT Pattern Name: Tester
Good quality
Reviewed in the United States on February 16, 2026 by Ken Kirk

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