• Test for correct wiring of 3-wire receptacles
• Tests 110 V AC to 125 V AC, 50/60 Hz circuits
• Reports the following states: Correct, Open Ground, Open Neutral, Open Hot, Hot/Ground Reverse, and Hot/Neutral Reverse
• Confirms operation of the ground fault protective device on GFCI outlets
• Test code light legend on both sides

The Extech ET11 is a ground-fault circuit interrupter (GFCI) Receptacle Tester for Type B electrical outlets. It tests GFCI circuits for faulty wiring in 3-wire receptacles in 110-125 V AC, 50/60 Hz circuits. The ET11 verifies correctly wired receptacles and detects several different wiring faults including: Open Ground, Open Neutral, Open Hot, Hot/Ground Reverse, and Hot/Neutral Reverse with lights that indicate the circuit condition. Featuring convenient features like an ergonomic pull bar and a legend on both sides of the device, the ET11 ensures safe and reliable inspection of outlets every time.