Leviton SmartlockPro 20 Amp 125V Duplex White GFCI Outlet 5-20R GFWT2-0KWThe SmartlockPro Self Test GFCI tests itself even if you forget. Designed to meet the latest UL standard for auto monitoring (self test) our complete line of self test GFCIs periodically conduct an automatic internal test to confirm that it can respond to a ground fault. With the slimmest profile on the market, the device allows for fast and easy installation, while Leviton's patented reset lockout mechanism prevents reset of the GFCI if it is not