Search  for anything...

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

  • Based on 7,273 reviews
Condition: New
Checking for the best price...
$16.94 Why this price?
Save $3.03 was $19.97

Buy Now, Pay Later


As low as $4 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Jul 25
Order within 15 hours and 42 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

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: 0.05 Pounds


Power Source: Battery Powered


Minimum Operating Voltage: 50 Volts


Upper Temperature Rating: 60 Degrees Celsius


Measurement Type: Voltmeter


Maximum Operating Voltage: 1000 Volts


Style Name: NCVT


Color: Green,Red,Yellow


Item Weight: 0.05 Pounds


Item Dimensions: 5.5 x 0.72 x 1 inches


Specification Met: Cat Iv 1000v


Brand Name: KLEIN TOOLS


Model: NCVT1P


Unit Count: 1.0 Count


UPC: 092644693700


Warranty Description: Please refer to attached warranty document for information


Manufacturer: Klein Tools


Global Trade Identification Number: 00


Included Components: Instructions and 2 x AAA 1.5 Volt Batteries


Item Type Name: Klein Tools NCVT1P Voltage Tester, Non-Contact Voltage Detector Pen, 50V to 1000V AC, Audible and Flashing LED Alarms, Pocket Clip


Part Number: NCVT1P


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jul 25

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Works flawlessly!
Style: NCVT Pattern Name: Tester
Klein makes the best tools and this voltage detector works flawlessly. Very happy with my purchase.
Reviewed in the United States on July 7, 2026 by S. Dilbeck

  • Simple, but useful tool
Style: NCVT Pattern Name: Tester
Works great! I've already done 2 home projects since receiving it. It's very easy to use.
Reviewed in the United States on July 3, 2026 by Mark W. Maziarz

  • Worked for my needs.
Style: NCVT Pattern Name: Tester
Great product. Worked well for my needs. Would definitely recommend this item.
Reviewed in the United States on July 6, 2026 by Vic

  • 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

  • Current Checker
Style: NCVT Pattern Name: Tester
Works great for I’m not an electrician and helps me identify outlets with or without power when I plug something into it.
Reviewed in the United States on February 12, 2026 by gnowbmas

  • Great Buy
Style: NCVT Pattern Name: Tester
Works perfectly for my field services business
Reviewed in the United States on July 11, 2026 by Treneice Mackey

  • Beep = Danger. No Beep = I Live Another Day.
Style: NCVT Pattern Name: Tester
This Klein voltage tester is now my emotional support tool. I walk around the house tapping outlets like a low‑budget electrician, and it beeps with the confidence of a smoke alarm. The green light says “you’re fine,” the red light says “don’t touch that unless you want a new hairstyle.” Small, loud, accurate — and it makes me feel way more qualified than I am. ... show more
Reviewed in the United States on July 12, 2026 by Gprice144

  • Klein Tools
Style: NCVT Pattern Name: Tester
Good voltage sensor, easy to operate
Reviewed in the United States on July 2, 2026 by Mr Freeze

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...