Model # GVD-3505

Internet #202867896

Gardner Bender 12-600 VAC Adjustable Circuit Alert Non-Contact Voltage Tester

Gardner Bender

12-600 VAC Adjustable Circuit Alert Non-Contact Voltage Tester

  • On/off sensitivity detects presence of AC voltage from 12-600 V
  • Use for low voltage lighting, outlets and switches
  • Safe test-features ensures batteries are operating efficiently
$1309 /each
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Product Overview

This 12-600 VAC Adjustable Circuit non-contact Voltage Tester features on/off adjustable sensitivity that detects the presence of AC Voltage from 12 - 600 V without contacting wires. It includes an audible sensor and flashing visual sensor to indicate voltage. A built-in safe test feature assures batteries are operating properly. Operates from 2-LR44 1.5 Volt batteries (included). Applications include testing doorbells, low voltage lighting, outlets, switches, electrical panels, and light fixtures.

California residents: see   Proposition 65 information

Info & Guides

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Name 50 - 250 VAC/DC Screwdriver-Voltage-Continuity Tester 12-600 VAC Adjustable Circuit Alert Non-Contact Voltage Tester 12-250 VAC/DC Voltage-Continuity-Screwdriver Tester DualCheck 2-in-1 Tester, 50-1000V AC Non-Contact Voltage Detector and GFCI Outlet Circuit Analyzer
Brand Gardner Bender Gardner Bender Sperry Commercial Electric
Ratings (1) (9) (0) (15)
Test Meter Type Voltage Tester Voltage Tester Voltage Tester Voltage Tester
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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Automatic Shut-off
Battery Power Type
Battery Size
Control Type
Display Type
Audible Alert,Handheld
Number of Batteries Required
Product Weight (lb.)
Test Meter Type
Voltage Tester
Tools Product Type
Test Meter

Warranty / Certifications

Manufacturer Warranty
1 Year Limited

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Customer Questions & Answers

Will it work through drywall?

Will it trace a 110v AC lead through drywall? I have a switch which is powered from the same 15A breaker as other lights, but I am unable to determine what the switch controls.
Asked by: Springbok
Most of the adjustable sensitivity detectors will work through dry wall to detect and trace wiring. Just turn up the sensitivity. Playing with sensitivity you can dial it in to just a few inches to locate and trace wiring on a live circuit inside a wall.
Answered by: DIY
Date published: 2017-07-14

why is it not in stores

why can you not buy it in store
Asked by: godr
There are to many to carry any specific model. Get the sensitivity feature.
Answered by: Dragon79
Date published: 2016-04-14

Do you have to keep holding down a button or switch to test the wires, or will it stay on without holding something?

Asked by: JTINHB
No. Place it on one side of a desk lamp wire and then the other and slowly adjust the sensivity control from low to high until it beeps and flashes. Thats how you locate the hot wire. Place the tip in each slot of a wall outlet and adjust the sensivity control and it will find the hot wire.
Answered by: Dragon79
Date published: 2016-04-16
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Customer Reviews

12-600 VAC Adjustable Circuit Alert Non-Contact Voltage Tester is rated 4.9 out of 5 by 9.
Rated 5 out of 5 by from This is the One I've tried both the Milwaukee, and Klein Tools Voltage Testers and returned both because they were not sensitive enough to pick up emf unless you were touching the wire. The GB Tester is adjustable and works great - close or far if there is emf you will detect it. This is my 2nd GB Tester - one for work, one for home. My 1st GB Tester is over 5 Years old and still works great. I highly recommend this product.
Date published: 2012-11-21
Rated 5 out of 5 by from 12-600 VAC Adjustable Circuit Alert Non-Contact Voltage Tester This works excellent and I love the sensitivity wheel switch. Was able to find the wiring problem with my outdoor lighting which is 12 VAC. Thanks for an excellent product!
Date published: 2013-11-20
Rated 5 out of 5 by from voltage tester I love this tester! You can control the sensitivity and most other testers do not allow you to do this.
Date published: 2014-02-19
Rated 5 out of 5 by from Works as described. Battery strength indicator comes on at start up. This product is very simple and accurate to use. You will like it.
Date published: 2014-03-19
Rated 5 out of 5 by from good easy to use sensitivity adjustment great to have ok
Date published: 2015-01-20
Rated 4 out of 5 by from Good Safety Tool - Homeowner and Pro So many times you need to perform a small electircla task like change a receptacle, or install a light wsitch, etc where you have to utilize an existing junction box. So often previous owners or 'handymen' ran a branch circuit through or frm that box and you really are not sure the box is dead before working the wires. This tool provides confidence and a convenient was to check if power is 'live'
Date published: 2015-01-27
Rated 5 out of 5 by from A must have if you're doing electrical These are a quick and easy way to find out if a circuit is live. Very easy to use.
Date published: 2016-02-10
Rated 5 out of 5 by from nob and tube I need a tester to get at some nob and tube wiring. Find the hot and common. This tool really helped. the sensetivity control is a great feature and really came in handy. Eliminated alot of false positives. In fact this should be standard feature. First tester I owned.
Date published: 2016-01-07
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