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Greenlee GT-16 adjustable voltage detector pen shape yellow body

Greenlee

Greenlee GT-16 Adjustable Voltage Detector measurement tool

SKU CH-ZBVY-X18GY MPN GT-16

Adjustable non-contact detector finds AC voltage, wire breaks and identifies hot or neutral conductors in outlets, fixtures and cables

  • Selling UnitCard
  • TypeVoltage Detectors
  • Features* Use to detect voltage in outlets, lighting fixtures, wires
  • Detects AC voltage safely with adjustable sensitivity
  • Locates wire breaks to speed up fault finding
  • Identifies hot and neutral conductors for correct wiring
  • Operates on included AAA battery for immediate use
  • Non-contact design allows testing without direct conductor contact

Purpose & Audience

The Greenlee GT-16 is a non-contact adjustable voltage detector built for electricians and technicians who need to verify live circuits. It identifies hot and neutral conductors and locates breaks in wires without direct contact. The tool suits professionals working on outlets, lighting fixtures and cable runs where safe, quick checks are required.

Thermals Noise Power

The detector operates on a single included AAA battery, drawing minimal power during typical use. No fan or active cooling is present, so the device runs silently and generates no measurable heat. Adjustable sensitivity lets the user match detection range to the task, reducing false triggers while maintaining reliable indication of AC voltage presence.

Build Fit & Constraints

Supplied with battery and instructions, the GT-16 is ready for immediate use on site. Its compact form fits in a tool pouch or pocket, leaving both hands free for wiring work. The adjustable threshold covers both power and low-voltage circuits, so one instrument replaces multiple fixed-range testers. Buyers needing continuous data logging or DC voltage measurement will require a different instrument.

Highlights

  • Detects AC voltage safely with adjustable sensitivity
  • Locates wire breaks to speed up fault finding
  • Identifies hot and neutral conductors for correct wiring
  • Operates on included AAA battery for immediate use
  • Non-contact design allows testing without direct conductor contact

Specifications

BrandGreenlee Textron
ModelGT-16
Selling UnitCard
TypeVoltage Detectors
Features* Use to detect voltage in outlets, lighting fixtures, wires and cables
* Finds breaks in wires
* Identifies hot and neutral conductors
* Adjustable to safely detect power and low voltage
* Safely detects AC voltage without touching the bare conductor
* Adjustable for use on power wiring plus lighting, thermostats and other low voltage circuits
* Low battery indications
* Includes 1.5 volt AAA battery
* Limited lifetime warranty
* Carded
Shipping weight0.11 kg
Package size224 × 122 × 10 mm

Questions about this item

How do I set the GT-16 to the right sensitivity before testing a circuit?

Hold the detector near a known live source and turn the adjustment until the indicator just activates, then back it off slightly so it only responds to the target voltage range.

What part of the GT-16 will need replacement after extended use?

The included AAA battery is the only user-replaceable component; the detector itself has no scheduled maintenance parts.

At what point does the GT-16 stop giving reliable readings during continuous scanning?

The detector remains accurate until the AAA battery voltage drops below the level needed to power the sensing circuit, which is the first limit reached under sustained use.

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