Klein Tools Non-Contact Voltag...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$96.10
$75.93
Klein Tools NCVT-5A Non-Contact Voltage Tester Pen, Dual Range, with Laser Pointer

Klein Tools Non-Contact Voltage Tester with Laser Pointer - Dual Range 12-1000V AC, CAT IV Safety Rating

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Model: NCVT-5A
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$96.10
$75.93
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Klein Tools Non-Contact Voltage Tester with Laser Pointer - Dual Range 12-1000V AC, CAT IV Safety Rating

Professional dual-range voltage detection with integrated laser pointer for enhanced jobsite precision

The Klein Tools Non-Contact Voltage Tester delivers reliable AC voltage detection from 12 to 1000V with CAT IV 1000V safety rating for professional electrical applications. This compact tester features dual-range capability, switching between 12-1000V AC for low voltage systems like doorbells and environmental controls, and 70-1000V AC for electrical mains detection. Built with 9.8-foot drop protection and an integrated Class IIIa laser pointer, this lightweight tool provides simultaneous visual and audible voltage indicators with frequency-responsive beeping that increases as voltage levels rise.

Professional Features & Benefits

  • Dual Range Detection (12-1000V AC): Versatile testing capability covers both low voltage systems and electrical mains with precision accuracy
  • CAT IV 1000V Safety Rating: Professional-grade safety certification ensures reliable protection in demanding electrical environments
  • Integrated Class IIIa Laser Pointer: High-strength red laser enables precise identification of objects and connections at distance on jobsites
  • 9.8-Foot Drop Protection: Rugged construction withstands harsh working conditions and accidental drops for long-term reliability
  • Simultaneous Visual & Audible Alerts: Frequency-responsive beeping and visual indicators provide clear voltage presence confirmation
  • Auto Power-Off Function: Battery conservation technology extends operational life with 31-hour laser operation and 25-hour NCV testing
  • Compact Design with Pocket Clip: Lightweight 0.093 lbs construction with convenient storage clip ensures quick access and portability

Technical Specifications

  • Batteries: 2 x AAA
  • Battery Life: Laser On - 31 hr; NCV On with Visual and Audible Alerts - 25 hr
  • Department: Electrical
  • Depth: 6.0000 in
  • Drop Protection: 9.8' (3 m)
  • Frequency: 50 to 500 Hz
  • Height: 0.9580 in
  • Material: Plastic and Electronic Assemblies
  • Overall Height: 1.16" (2.9 cm)
  • Overall Length: 6" (15.2 cm)
  • Overall Width: 0.96" (2.4 cm)
  • Pollution Degree: 2
  • Product Details: Non-Contact Voltage Tester
  • Product Group: Test & Measurement
  • Product Subgroup: Electrical Testers
  • Product Type: Non-Contact Voltage Tester
  • Product Voltage: 12 to 1000 VAC
  • Standard: CAT IV 1000V; Laser: Class IIIa, 630-670nm, Max Power <5mW
  • Weight: 0.0930 lbs
  • Width: 1.1520 in

Professional Applications

  • Residential electrical troubleshooting and maintenance
  • Commercial facility electrical inspections
  • Industrial electrical system diagnostics
  • Low voltage system testing (doorbells, environmental controls, irrigation)
  • Electrical panel and circuit breaker verification
  • Security and communications system voltage detection
  • Professional electrical contractor fieldwork

Why Choose Klein Tools Quality?

Klein Tools delivers professional-grade reliability with CAT IV 1000V safety certification and rugged 9.8-foot drop protection construction. The intuitive interface design and extended battery life ensure consistent performance in demanding electrical applications, backed by Klein Tools' commitment to professional electrical tool excellence.

Manufacturer Resources

Product Specs

Batteries:
2 x AAA
Battery Life:
Laser On - 31 hr; NCV On with Visual and Audible Alerts - 25 hr
Drop Protection:
9.8' (3 m)
Frequency:
50 to 500 Hz
Overall Height:
1.16" (2.9 cm)
Overall Length:
6" (15.2 cm)
Overall Width:
0.96" (2.4 cm)
Pollution Degree:
2
Standard:
CAT IV 1000V; Laser: Class IIIa, 630-670nm, Max Power <5mW
Department:
Electrical
Product Group:
Test & Measurement
Product Subgroup:
Electrical Testers
Product Type:
Non-Contact Voltage Tester
Product Voltage:
12 to 1000 VAC
Product Details:
Non-Contact Voltage Tester
Product Height:
0.9580 in
Product Material:
Plastic and Electronic Assemblies
Product Weight:
0.0930 lbs
Product Width:
1.1520 in
Product Depth:
6.0000 in

Klein Tools NCVT-5A – Frequently Asked Questions

1) Will the Klein NCVT-5A detect low voltage like doorbell and thermostat wiring, or only line voltage?
Both. The NCVT-5A is a dual-range tester: the low range picks up from 12V AC, which covers doorbells, thermostats and other environmental control wiring, and the high range starts at 70V AC for standard mains work. Full detection span is 12 to 1000V AC. Use the high range on branch circuits and panels so low-level induced voltage on nearby conductors doesn't give you false alerts.
2) Is the Klein NCVT-5A rated for use inside a commercial service panel?
It carries a CAT IV 1000V rating, which is the category covering the service entrance and utility side of the installation, so panel and meter work is within its rating. Pollution Degree 2 is stated, meaning it's intended for normal indoor, non-conductive-contamination environments rather than wet or heavily contaminated locations.
3) Will this Klein tester work on 400 Hz aircraft or generator circuits?
Yes, within limits. The NCVT-5A's detection band runs 50 to 500 Hz, so 400 Hz aircraft and some variable-frequency output falls inside it, along with standard 50 and 60 Hz power. It won't indicate on DC, since this is an AC-only non-contact detector.
4) What batteries does the Klein NCVT-5A take and how long do they last?
Two AAA cells. Klein rates runtime at 25 hours with NCV detection on using both visual and audible alerts, and 31 hours with the laser on. Auto power-off shuts it down when it's left sitting, which is what keeps a pen tester in a truck box usable months later. Stock AAAs if you're standardizing a crew on these.
5) Will the Klein NCVT-5A survive being dropped off a ladder?
It's built to a 9.8 foot (3 m) drop rating, which covers a fall from a standard step ladder onto a hard floor. Body is plastic and electronic assemblies with a pocket clip, and it weighs 0.093 lbs, so it rides in a shirt pocket all day.
6) Which Klein model number do I order for the dual-range tester with the laser?
NCVT-5A is the model. That is the dual-range 12-1000V AC non-contact tester with the integrated Class IIIa laser pointer and CAT IV 1000V rating. Klein's non-contact pens run several variants, so specify NCVT-5A if you want the laser and the two detection ranges rather than a single-range pen.
7) What is the laser on the Klein NCVT-5A actually for, and what class is it?
It's a Class IIIa red laser, 630 to 670nm, under 5mW output, built into the same pen body. On the job it's used to point out the exact conductor, fixture or termination you're calling out from across a room or up in a ceiling, so the person on the ladder is looking at the right thing. It does not change how voltage is detected, which stays non-contact.
8) How big is the Klein NCVT-5A pen tester, and will it fit in a pouch pocket?
Overall it's 6 inches long, 0.96 inches wide and 1.16 inches high, so it drops into a pen slot on a tool pouch or a shirt pocket with the integrated clip. At under a tenth of a pound it adds essentially nothing to a loaded belt.
9) Can I tell voltage is present on the Klein NCVT-5A without looking at it?
Yes. It gives visual and audible alerts at the same time, and the beep rate climbs as voltage level rises, so you can track down a live conductor by ear while your eyes stay on the work. Useful in a panel or crawlspace where you can't watch the pen.
How fast can I get the Klein Tools NCVT-5A delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Klein Tools NCVT-5A come with a warranty?
Absolutely. The Klein Tools NCVT-5A is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Klein Tools NCVT-5A?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Klein Tools NCVT-5A from ZenSupply?
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