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Klein NCVT-1 5.5 x 0.72 x 1 Inch 48 to 1000 VAC AAA Two Alkaline Battery Non-Contact Voltage Tester

Manufacturer: Klein Tool | Catalog # NCVT-1 | North Coast Part # 539171

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Use this Non-Contact Voltage Tester to detect standard voltage in cables, cords, circuit breakers, lighting fixtures, switches, outlets and wires. A bright green LED will tell you the tester is working and also functions as a worklight. It changes to red and warning tones sound when voltage is detected.

Technical Information

For Detecting Standard Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires
Battery Type
Blade Dimensions
5-1/2 in L x 0.719 in W x 1 in D
500 Hz
Number of Rows
Power Supply
(2) AAA Battery
1000 Volt

Manufacturer Information

Family Brand Name
Klein Tools

General Product Info

Product UPC
0.80 oz


5-1/2 Inch
1 Inch
5-1/2 Inch
Overall Length
5.50 in
0.720 in

Certifications and Compliance

CA Prop65 Warning
WARNING: Cancer and Reproductive Harm See for more information.
  • Never assume neutral or ground wires are de-energized. Neutrals in multi-wire branch circuits may be energized when disconnected and must be retested before handling.
  • Read, understand, and follow all warnings, cautions, safety information, and instructions in this manual before operating or servicing this tester. Failure to follow instructions could result in death or serious injury.
  • 6.6-Foot (2 m) drop protection
  • Volt Pen with high intensity, bright green LED that indicates the tester is operational and aids in illuminating the workplace
  • When voltage is detected, a high intensity, bright red LED illuminates and a warning tone sounds
  • Product not recommended for testing tamper-resistant outlets; use NCVT2P or NCVT3P in low voltage mode
  • 50 to 1000 Volt AC power operating range allows broad application
  • Auto power-off feature conserves and extends battery life
  • Conforms to CE requirements
  • Lightweight compact design with a convenient clip to fit securely in your pocket
  • Discreet digitally controlled ON/OFF power button
  • Durable polycarbonate plastic resin construction
  • Includes instructions and 2 x AAA 1.5 volt batteries
  • CAT IV 1000 Volt safety rating provides expanded operation and protection
  • Voltage Tester provides non-contact detection of voltage in cables, cords, circuit breakers, lighting fixtures, switches, non tamper-resistant outlets and wires
  • Microprocessor controlled low-battery indicator and tester shutdown