Patented bridge contact provides individual sets of contacts for GFCI receptacle face and downstream receptacles; no power to receptacle face if improperly wired (line-load reversal) * Patented lockout feature for added safety prevents RESET if GFCI is not operating properly * TEST and RESET button colors match device face * Soothing blue LED dual-function indicator light * Advanced electronics design provides superior resistance to electrical surges and over-voltages