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Yellow plastic GFCI outlet tester with three indicator lights and black test button

Gardner Bender

Gardner Bender GFCI Outlet Tester 3501 110-125V Hand Tool

SKU CH-D411-A9DBQ

Tests ground fault breakers by overloading 110-125V circuits to identify seven wiring conditions with yellow and red indicator lights

  • Tests GFCI breakers by overloading the circuit
  • Identifies seven wiring faults with LED indicators
  • Works on standard 110-125 volt AC receptacles
  • Simple push-button operation for quick testing
  • Carded hand tool for electrical diagnostics

Purpose and user

This Gardner Bender GFCI outlet tester plugs into any 110-125 volt AC ground fault receptacle to verify wiring safety. It is designed for electricians, maintenance technicians and homeowners who need to confirm that GFCI protection is functioning correctly. The tool checks seven distinct fault conditions including open ground, open neutral, open hot and reversed wiring. Yellow and red indicator lights identify the specific fault or confirm correct wiring.

Interface limits

The tester operates only on standard 110-125 volt AC ground fault receptacles and cannot be used on higher-voltage circuits or non-GFCI outlets without an adapter. It draws power directly from the receptacle under test, so no battery is required. The black test button deliberately overloads the circuit to trip the GFCI breaker, which means the device will interrupt power on a functioning circuit. Results are shown through the built-in light array; there is no digital display or data output.

Deciding specification

The critical specification is the 110-125 volt AC rating combined with the ability to trip a GFCI breaker via the test button. If the installation uses a different voltage range or lacks ground fault receptacles, this tester will not work. Model 3501 covers the seven most common wiring faults in North American residential and light-commercial circuits, making it the right choice when a simple pass-or-fail indication on live GFCI outlets is required.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 83% of the 2,474 comparable items (median $23.99).

Specifications

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Product typeOther

Questions about this item

Should I choose the 110-125V version for standard household outlets?

Yes, the tester is rated for 110-125 volt AC receptacles, matching typical North American household wiring.

What does the seven-condition readout tell me when I press the black button?

Pressing the button overloads the circuit to trip the GFCI; the yellow and red lights then indicate correct wiring, open ground, open neutral, open hot, hot/ground reverse or hot/neutral reverse.

Does the plug-in design work with any standard GFCI receptacle?

The unit plugs directly into any ground-fault receptacle rated 110-125 volt AC, so it fits the common outlets found in kitchens, bathrooms and outdoor locations.

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