Klein Tools - For Professionals Since 1857

Non-Contact Voltage Tester Pen, 50 to 1000 Volts


  • Voltage Tester provides non-contact detection of voltage in cables, cords, circuit breakers, lighting fixtures, switches, non-tamper-resistant outlets and wires
  • Volt Pen with a 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
  • Discreet digitally controlled ON/OFF power button
  • Auto power-off feature conserves and extends battery life
  • Microprocessor-controlled low-battery indicator and tester shut-down
  • CAT IV 1,000-Volt safety rating provides expanded operation and protection
  • 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 for broad applications
  • Durable polycarbonate plastic-resin construction
  • Lightweight compact design with a convenient clip to fit securely in your pocket
  • Includes instructions and 2 x AAA (1.5 volt) batteries
  • 6.6-foot (2 m) drop protection
  • Conforms to CE requirements
JPG (High Resolution) ncvt1_b_photo.jpg
PNG (Transparent Background) ncvt1_b.png

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 will tell you that the tester is working, and also functions as a work light. It changes to red, and warning tones sound, when voltage is detected.

Non-Contact Detection and Testing of AC Voltage; Not Recommended for Tamper-Resistant Outlets
Special Features:
Green LED turns off and red LED illuminates continuously.
Drop Protection:
9.8' (3 m)
50 - 1000V AC
50-500 Hz
Pollution Degree:
CAT IV 1000V
Insert Card with Integrated Owner's Manual and 2 AAA 1.5-volt Batteries
2 x AAA
Overall Length:
5.50'' (14 cm)
Overall Height:
1.00'' (2.5 cm)
Overall Width:
0.72'' (1.8 cm)
0.80 oz (22.70 g)
Additional Information
  • 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.
  • Never assume that neutral or grounded wires are safe. Neutrals in multi-wire branch circuits may be live when disconnected and must be retested before handling.