Tamper and weather resistant duplex GFCI, specification grade, back and side wiring. Performs periodic self-tests to ensure integrity of GFCI protection. Visual trip indicator light gives quick notification of a tripped or "end of life" condition. Meets and exceeds 10 kA short circuit testing and Underwriters Laboratories (UL) UL943 safety standards. Automatic grounding system eliminates need for bonding jumper in grounded metal enclosure. Line-load miswiring protection. GFCIs will not provide power when wired incorrectly. UL Listed.