• Easily identifies open ground, open neutral, open hot, hot & ground reversed, hot & neutral reversed, correct wiring
  • 50 / 60 Hz frequency
  • 110 to 125 VAC nominal voltage
  • 3-wire with GFCI circuit/outlet type
    • GFCI trip test with status LED
  • 32 to 122°F (0 to 50°C) operating temperature
  • No batteries required

What's in the Box

  • RT50 tester
  • Operating instructions


The FLIR RT50 GFCI receptacle tester provides electricians, building inspectors and home owners with a solution to verify or troubleshoot operation of a 3-wire receptacle circuit within residential and commercial buildings. Housed in an impact-resistant case, the RT50 meets UL safety standards in the US and Canada and can test for correct wiring in 110 to 125 VAC, 50/60 Hz circuits.

Featuring bright and easy-to-read indicator lights, the FLIR RT50 allows users to safely detect multiple wiring anomalies including open ground, open neutral, open hot, hot and ground reversed ,hot and neutral reversed and correct wiring. Additionally, this FLIR receptacle tester provides positive indication that the circuit has tripped with the GFCI test annunciator LED.