When it comes to outdoor GFCI protection, it"s smart to choose SmartlockPro Slim Weather-Resistant G View larger Typical GFCI (under left image) SmartlockPro GFCI (under right image). View larger The Leviton 20-Amp Weather-Resistant (WR) SmartlockPro Slim GFCI is UL Listed to comply with the NEC Code which mandates all receptacles exposed to the elements to carry a "Weather-Resistant" rating. Built with UV stabilized engineering thermoplastic for high cold impact resistance, the WR GFCI devices feature stainless steel straps and mounting screws, as well as a conformally coated PC board to protect critical components from moisture. This GFCI is ideal for exterior use and covers must be used with WR GFCI receptacles per the NEC Code. The device combines professional grade lockout action with the slimmest profile on the market. The Leviton SmartlockPro Weather-Resistant Slim GFCI is also available in a tamper-resistant model to help protect children from electrical hazards in homes and childcare facilities. The 20-Amp tamper-resistant model is the Leviton WT599. Slim, Sleek Build for Easy Installation The SmartlockPro GFCI boasts a reduced depth that makes it easier to install in any electrical box, even a shallow one. Compared to other GFCIs, its slim size provides up to 25 percent more space in the wallbox, and it mounts flush to the wall with minimal protrusion for a sleek, finished look. Simple Wiring Options Both back and side wire capable, the SmartlockPro GFCI terminals allow for easy wiring options. Back wire clamps provide visual indication of proper wire seating, eliminating guesswork. Built to Last with Advanced Technology Designed to provide years of reliable performance, the SmartlockPro GFCI withstands high torque and resists wire pullout. Its patented reset lockout feature automatically tests the GFCI every time the RESET button is pushed in. The GFCI will not reset if its circuit is not functioning properly. Additionally, its trip threshold meets or exceeds UL requirements for tripping time, and its electronics design provides strong resistance to electrical surges and over-voltages. Compatibility and Warranty Information The SmartlockPro GFCI is compatible with all Decora devices and wallplates. It is backed by a manufacturer"s two-year limited warranty. View larger 20-Amp SmartlockPro Weather-Resistant Slim GFCIAt a Glance: Reduced depth makes for easier installation in any electrical box Conformally coated PC board to protect critical components from moisture Terminals allow for easy wiring options; back and side wire capable Stainless steel strap and screws Cold impact resistant face and buttons/UV stabilized plastics