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Compact rectangular outlet tester with backlit LCD screen and three-prong plug, matte grey finish

aFe Power RT250 GFCI Outlet Tester with LCD Display

SKU CH-TFBX-P2NWS

Tests standard 3-wire 120V receptacles and GFCI devices, showing voltage, trip time, and wiring faults on a backlit LCD with auto-hold

  • Team affiliation1 Piece
  • Key features2 × 1.5 V AAA Alkaline Batteries and Manual, CSA, Corded Ele
  • Overall height4.53 L x 1.16 W x 2 H inches
  • Overall width4.53 L x 1.16 W x 2 H inches
  • Overall length4.53 L x 1.16 W x 2 H inches
  • Product weight0.26 lb (0.12 kg)
  • Backlit LCD shows voltage and wiring status clearly
  • Trip-time readout speeds up GFCI troubleshooting
  • Detects common wiring faults for safer outlets
  • Patent-pending open-neutral and open-ground detection
  • Auto-hold freezes readings on hard-to-reach receptacles

aFe Power RT250 GFCI Outlet Tester

The aFe Power RT250 is a receptacle tester designed for North American 3-wire 120V electrical outlets. It identifies wiring conditions and inspects GFCI devices for electricians and homeowners. The tool features a large backlit LCD readout that displays voltage levels and specific fault codes. Patent-pending detection identifies Open Neutral and Open Ground faults for enhanced safety.

Thermals, noise and power draw

The unit operates on two 1.5V AAA alkaline batteries included in the package. As a corded electric tester that plugs directly into a receptacle, it draws minimal power from the batteries during testing. No active cooling or moving parts are present, so the device runs silently. The lightweight body weighs 0.26 pounds for easy handling during inspections.

Behaviour under sustained load

The Auto-Hold function retains readings on the display when accessing hard-to-reach outlets. Trip time measurement captures the duration required to trip a GFCI device during extended test sequences. The LCD continuously displays voltage and fault status throughout the testing process. Durable construction supports repeated use across multiple job sites without performance degradation.

How it compares

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Price $30.99
Typical for this category: the median of 971 items is $30.99.

Specifications

Product
Brand nameaFe Power
Product typeClamp
Size & build
Overall height4.53 L x 1.16 W x 2 H inches
Overall width4.53 L x 1.16 W x 2 H inches
Overall length4.53 L x 1.16 W x 2 H inches
Product weight0.26 lb (0.12 kg)
More details
Team affiliation1 Piece

Questions about this item

How do I install the tester in a standard 120V outlet, and what step is often missed?

Insert the tester fully into the three-wire receptacle; the step often missed is waiting for the backlit LCD to display voltage and wiring-fault codes before pressing the GFCI test button.

What maintenance will the RT250 need later?

Replace the two 1.5V AAA alkaline batteries when the LCD dims or readings become erratic; no other user-serviceable parts are required.

What limit appears first during sustained testing of GFCI trip times?

The LCD trip-time readout is designed for standard 120V receptacles; continuous high-cycle testing can overheat the internal circuitry before the display reaches any numerical limit.

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