Meets new 2008 NEC Code tamper resistant requirements Helps prevent improper insertion of foreign objects UL 943-2006 compliant Lock out function will not allow GFCI to reset if miss-wired End of life function stops voltage in the event of a GFCI component failure 125 Volt AC 8 back wiring holes and side wire screws accept up to 12 gauge wire LED status indicator, color matched wall plate and screws 20 Amp White