Automatic testing GFCI receptacle with nightlight. If no GFCI protection is present, the receptacle will render itself inoperable. Tamper resistant, contains a UL listed safety shutter system that prevents the insertion of foreign objects into receptacles. The safety shutters will open only upon insertion of a 2-prong or 3-prong plug. Specification grade. 2-pole, 3-wire grounding. UL Listed.