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Tool Type
Voltage Detector
Audible Indicator
Battery Operated
LED Feedback
Visual Indicator
Ease of Installation
Beginner (Installs < 10 minutes)
Extech Instruments
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39 Inch Non-Contact Voltage Detector 1000V AC
Extech Instruments DV50 Telescoping AC Voltage Detector
Extech Instruments DV50 Telescoping AC Voltage Detector
Extech Instruments DV50 Telescoping AC Voltage Detector
Item# 90275
Price: Normally $29.99 
Hot Deal $26.24
Free shipping on orders over $175 - See Details


  • Non-Contact Detection of AC Voltage from 5VAC to 1000VAC (50/60Hz)
  • Telescoping probe extends to a reach distance of 39 inches (1m)
  • Red and Green LED indicators and switch controlled On/Off Audible beeper
  • Sensitivity adjustment increases or reduces sensor trigger threshold
  • Locate difficult to reach live wires and potentially dangerous manhole covers and breaks in overhead lighting

Essential Info

Non-contact detection of AC Voltage up to 1000VAC, with telescoping probe giving a total reach of 39 inches (1m) for hard-to-reach areas


What's Included

  • Voltage Detector
  • Two LR44 Button Batteries

  • More Info

  • Detecting live AC Voltage on manholes with convenient telescoping probe. When Voltage is detected, audible beeper will sound and the red LED will flash on the probe tip.
  • Telescoping feature provides the convenience of easy reach by eliminating the hassles of bending down
  • Probe extends to 0.9m with reach distance of 1m allows you to take measurements in hard to access areas without the use of a ladder.

  • Specifications

  • Voltage Sensitivity: 6V to 1000V AC
  • Bandwidth: 50/60Hz
  • Operating Temperature: 32 to 122oF (0 to 50oC)
  • Storage Temperature: -4 to 140oF (-20 to 60oC)
  • Altitude: Operating below 2000 meters
  • Relative Humidity: 80% up to 31oC, decreasing to 50% at 50oC
  • Battery: 2 x 1.5V button batteries (LR44/AG13)
  • Dimensions/Weight: 7.7x2.4x1.2in(195x62x30mm)/ 5.2oz (148g)
  • Important notes:
    Only merchandise credit for defective items returned within 30 days of purchase. No other returns allowed on this item.
    Manufacturer contact information: Extech Instruments Corp, Tel: (781) 890-7440 Ext 200


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