The Leviton Smartlock Pro Self-Test GFCI (GFWT1-GY) provides continuous ground fault protection by automatically testing itself, even if you forget. Meeting the latest UL standards, this GFCI periodically conducts internal tests to confirm its responsiveness to ground faults. Its slim profile allows for fast and easy installation, while the patented reset lockout mechanism prevents resetting if the device is damaged or improperly wired. Compatible with Decora devices and wallplates, the GFWT1-GY offers a smart and reliable solution for ground fault circuit interrupter protection in residential settings.