Cooper Wiring Devices Ground Fault Circuit Interrupter (GFCI) receptacles are circuit interrupters designed to recognize a ground fault in your wiring and immediately break the flow of electricity thus protecting you from electrical shock. Further they prevent resetting if once tripped the ground fault renders the device no longer functional. Cooper Wiring Devices GFCIs are tested to the highest standards and provide dependable state-of-the-art protection suitable for residential commercial and industrial settings including homes offices hospitals schools and even outdoor applications. Features: ShockSentry GFCI/DDFT/ICTA Fully compliant with the latest NEC� and UL943 standards our GFCIs are tested to the highest standards and provide state-of-the-art dependable electric shock protection by denying the power and preventing re-setting if the device is determined to no longer be able to safely provide protected power. Built-in UL listed safety shutter system Automatically self-tests periodically to ensure GFCI protection Visual indicator lights give quick notification of a tripped or �end of life" condition Horizontal test/reset button alignment provides larger unobstructed area Rugged construction provides unsurpassed impact resistant Specifications: 125 volts 15 amp 2-pole 3-wire Color: Gray Commercial grade Wall plate included Dimensions: 4.5"H x 2.75"W x 1.5"D