GROUND FAULT CIRCUIT INTERRUPTER - INDOOR/OUTDOOR USE, PROVIDES INCREASED RESISTANCE TO WATER, UV EXPOSURE, IMPACT AND HEAT - NEW LARGER TEST AND RESET BUTTONS ARE EASIER TO OPERATE AND PROVIDE ENHANCED TACTILE FEEL AND AUDIBLE FEED BACK - REDESIGNED CIRCUIT CONFORMS TO THE NEW UL 943 STANDARD FOR SAFETY GFCI'S - A MORE STRINGENT VOLTAGE SURGE TEST ENSURES THE GFCI CAN HANDLE HIGHER SURGE CURRENT - CORROSION TEST ENSURES GREATER IMMUNITY TO DAMP, CORROSIVE ENVIRONMENTS - ENHANCED IMMUNITY TO CONDUCTED RADIO FREQUENCY NOISE REDUCES NUISANCE TRIPS