Klein Tools NCVT1P Non-Contact Voltage Tester, 50–1000V AC

Klein Tools NCVT1P is a battery-powered non-contact voltage tester pen for detecting AC voltage from 50 to 1000V. Audible and flashing LED alerts, a pocket clip, and automatic power-off suit quick checks on wiring and electrical fixtures, but the manufacturer says it is not recommended for tamper-resistant outlets.

At a glance

Non-contact AC voltage detection for cables, cords, breakers, lighting fixtures, switches, and wires.
Green LED indicates the tester is operational. Red flashing LED and a beep signal detected voltage.
Auto power-off is intended to conserve battery life.
Compact pen design includes a pocket clip and stated 6.6-foot (2 m) drop protection.

Price

$15.97Save 20%

Reference price: ~~$19.97~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

Non-contact checking avoids direct probe contact with the conductor during the described detection use.
Audible and visual alerts provide two ways to notice a voltage indication.
The stated 50–1000V AC range covers the product's listed detection span.
Included AAA batteries and automatic power-off support use without a separate battery purchase, according to the listed contents and feature claims.

Cons

This is a detector pen, not a numerical voltage-measuring instrument. The listing provides no displayed voltage reading.
The manufacturer does not recommend it for tamper-resistant outlets.

Technical specifications

16 specifications

Identity
Brand	KLEIN TOOLS
Model	NCVT1P
Style	NCVT

Detection and indications
AC voltage detection range	50 to 1000V AC
Minimum operating voltage	50 volts
Maximum operating voltage	1000 volts
Measurement type	Voltmeter

Power and battery
Power configuration	Battery Powered
Power-saving feature	Auto power-off function
Batteries listed	2 x AAA 1.5 Volt Batteries

Size and durability
Dimensions listed	5.5 x 0.72 x 1 inches
Weight listed	22.68 g
Drop protection	6.6-Foot (2 m) drop protection
Upper temperature rating	60 °C

Other listed details
Color	Orange/Black
Specification met	Cat Iv 1000v

What to know before buying

The manufacturer says not to use this tester for tamper-resistant outlets. Its green operational light and voltage alerts are indications, not confirmation that a circuit is safe to touch.

What’s in the box

InstructionsIncluded
2 x AAA 1.5 Volt BatteriesIncluded
Pocket clipCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Electricians or DIY users wanting a compact non-contact AC voltage check for accessible wiring, cords, switches, and fixtures.
Buyers who prefer both visual and audible indication and a pocket clip.

Less suited to

Anyone needing a numeric voltage measurement or a tool recommended for tamper-resistant outlet testing.
Users relying on this pen alone to establish that wiring is de-energized or safe to touch.

Klein Tools NCVT1P Non-Contact Voltage Tester, 50–1000V AC · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 7,538 ratings

5 stars81%81%
4 stars11%11%
3 stars4%4%
2 stars1%1%
1 star3%3%

Customer feedback describes the tester as useful and reliable for electrical projects, while also reporting mixed experiences with accuracy, build quality, and voltage detection. Some users say it detects live wires well, while others report false indications or missed outlet voltage. The listed 50–1000V AC range and audible/LED alerts define its intended role, but do not resolve those reported differences or replace appropriate verification practices.

Positive themes

Customers report that it works well and is useful for electrical projects.
Some customers describe it as reliable and appreciate its safety-related usefulness.