Leviton M7899-HGE 20 Amp, 125 Volt, Lev-Lok, Smartlock Pro, GFCI Receptacle, Hospital Grade, Black Modular Wiring Device  Requires Mating Wiring Module for Installation Advanced Electronics Offers Superior Resistance to Surges and Over-Voltages Green LED Indicator Light; When Illuminated, it Indicates Power is Present Solid Brass Locking Pins for Strong, Secure Connection Between Receptacle and Wiring Module Built-In-End-Of-Life Identification. If the SmartlockPro Receptacle can no Longer Provide GFI Protection, it will not Reset and no Power is Supplied to the Face