GFCI Protection - Attached GFCI ensures more safety when in use, provide electric shock protection and prevent the risks of electrical fire caused by ground fault; it need to push the reset button to restore the power after interruption,please check your devices before push it to ensure the safety. Lighted Extension Cord End - LED indicator lights up when the cord is powered to let you know the GFCI extension cord is ready to use and easy to be found even in the dark.