radiant® weather-resistant duplex receptacles with USB charging capabilities are UL listed to UL498 for weather resistance and comply with section 406.9 of the national electrical code. charge your smart-phones, tablets, and laptops up to 40% faster than 3 to 5 A USB chargers with an industry-leading charging capacity of 6 A, shared between both ports. Enjoy the added safety of tamper-resistant receptacles that meet NEC® requirements for tamper-resistance. Protects children: patented shutter system helps prevent improper insertion of foreign objects - now with black invisi-shutters for an invisible effect. The external brass back-wire pressure-plate and posted side-wire terminal screws make installation fast and easy.