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 * Advanced Electronics Design Provides Superior Resistance to Electrical Surges and Over-Voltages * Impact-Resistant Thermoplastic Construction * Backed by a Limited Two-Year Warranty