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Triplett Full Product Catalog: Volume 1 Now Available


AFCI/GFCI Receptacle Tester (ET550)

Original price $99.99 - Original price $99.99
Original price
$99.99 - $99.99
Current price $99.99

Extended Lead Time: Up to 11 business days for NIST Calibration

Take safety and efficiency to a new level with the Triplett Model ET550 AFCI/GFCI Receptacle Tester.   Read More >


Take safety and efficiency to a new level with the Triplett Model ET550 AFCI/GFCI Receptacle Tester. Engineered to verify electrical outlet wiring and to assess the proper operation of GFCI and AFCI devices, it's a critical instrument for electricians, home inspectors, and DIY enthusiasts. Detect faulty wiring in 3-wire receptacles with ease, identifying six possible faults with the help of intuitive light indicators. With just a button push, test AFCIs, GFCIs, and 30mA equipment protection GFCIs for optimal safety. The ET550 includes a 19.7" (500mm) AC cord with a 3-wire plug, ideal for hard-to-reach receptacles, and three AAA batteries. A 1-year warranty comes standard for quality assurance.


  • Versatile Testing: Verifies electrical outlet wiring, tests GFCI and AFCI devices for correct operation.
  • Fault Detection: Diagnoses faulty wiring in 3-wire receptacles swiftly.
  • Comprehensive Indicators: Lights display six wiring faults for a detailed analysis.Quickly determine the correct phase wiring sequence (L1, L2, L3)
  • Device Testing: Allows quick testing of AFCI, GFCI, and 30mA equipment protection GFCIs.
    CAT IV 1000V safety category

  • Convenient Design: Includes an integrated 19.7" AC cord for testing hard-to-reach receptacles.
  • Durability: Drop-proof design tested up to 6.6ft (2m) enhances longevity.
  • User-friendly: Low battery indicator ensures consistent performance and reliability.
  • Includes: integrated 19.7" (500mm) AC cord with 3-wire plug for hard-to-reach receptacles, and (3) AAA batteries.
Drop Proof 6.6ft (2m)
Dustproof IP40
Safety Category CAT III 135V
Power 3 AAA Batteries
Dimensions 7.4 x 2.3 x 1.3" (188 x 58 x 32mm)
Weight 8.5oz (241g)