Martindale TEK100 Non Contact Voltage Indicator
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Martindale TEK100 Non Contact Voltage Detector

Martindale TEK100 Non Contact Voltage Detector
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Martindale Part No: MARTEK100

This is suitable for detecting 100V to 600V AC without requiring physical contact with the conductor. The presence of any voltage between 100V and 600V AC will generate an audible tone, together with a red visual indication.

The integral self test activates the sensor in the tip of the tester at 50Hz as well as checking the battery and LED. The entire circuit, not just the indicator LED, is therefore tested.

This proves that the unit is fully functional and avoids the need for a separate proving unit.

The only non-contact detectors with a built-in proving device that really proves the entire circuit.

CAT 1V 600V 

Voltage Range
  • 100 to 600V AC

Frequency Range

  • 45Hz to 1kHz


  • 3mm for 100V, 50Hz
  • 23mm for 240V, 50Hz

  • Distances are from the tip of the unit to a flat PVC twin core and earth cable suspended in free space.


  • Visual: Red LED
  • Audible: 2kHz Tone

General Specifications

  • Integrated self test proving unit
  • Operating Temperature: 0C to 50C
  • Overvoltage: CAT III 1000V, CAT IV 600V
  • Supply: 9V battery alkaline battery, MN1604 / PP3 or equivalent
  • Housing: Flame retardant ABS
  • Dimensions: 205 x 36 x 25mm
  • Weight: 120g approx (incl. battery)
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