From the Manufacturer
Leviton R42-08299-0AW Combination Single-Pole Switch and SmartLock PRO GFCI-Protected 15-Amp 125-Volt Outlet with Indicator Light, 1-Pack, White. Combination devices permit the installation of two devices in a space normally occupied by only one, resulting in reduced installation time and increased convenience. Elegant Decora brand styling permits ganging with other Decora Devices. Switch and SmartLock PRO GFCI receptacles replaces standard switch .outlet combination devices in commercial or residential installations. Space-Saving SmartLock Protection in new or retrofit construction. Meets or exceeds UL 2006 requirements. Test and Reset functions work together so that a tripped GFCI cannot be reset if GCFI circuit no longer provides ground fault protection. Reset button is blocked if GFCI protection has been compromised. Reducing the possibility of end-users incorrectly assuming that a reset GFCI is providing ground fault protection when it actually is not. Line-load diagnostic feature prevents GFCI from being reset and stops power from being fed to the GFCI receptacle face or through to downstream devices, this alerts to installer to a line-load reversal. Indicator light will be on to indicate line-load reversal. The SmartLock PRO GFCI with lockout action is designed and patented by Leviton. Trip threshold meets or exceeds UL requirements for tripping time. Impact-resistant thermoplastic cover and body. Silver-alloy contacts. Compatible with all Decora devices: Available in selected Decora colors. Ideal for kitchens, bathrooms, modular kitchen units, bathroom cabinet fixtures, lamp cabinet fixtures and applications where combination devices are used. Great for residential, outdoors, educational facilities, airports, restaurants, lodging, retail malls, commercial offices and public areas.