The EZ-FLO 20 Amp self-testing ground fault circuit interrupter outlet provides continuous protection from ground faults. The receptacle will disconnect power in 1/40 of a second if a dangerous condition is detected. Once connected to power this GFCI receptacle automatically self-tests every 2-1/2 hours giving you peace of mind. The LED Indicator display has 3 light indicators – (Green) GFCI is powered on and working properly,(Red) Blinks to alert you the unit has reached its end of life and needs to be replaced, (OFF) light turns off if the outlet is not receiving power or a ground fault protection has occurred for your safety. With a new slimmer design and capability for back and side wire, EZ-FLO receptacles are easy to install. An installation manual and wall plate are included in each package.