3GRACE 20 Amp GFCI Outlet, Tamper-Resistant GFI Receptacle with LED Indicator, Self-Test Ground Fault Circuit Interrupter, Decorator Wall Plates and Screws Included, UL Listed, White?1 Pack? 3GRACE GFCI Outlet - The 20 Amp 125 Volt 60 HZ GFCI Duplex Receptacle meets UL 943 class A and UL 498 receptacle standards. Constructed with premium high-impact resistant thermoplastic materials and rational structure design, It ensures Safe electrical with superior strength and durability. Tamper Resistant - Tamper Resistant shutters protect children from preventing objects from being inserted into the slots of the outlets, provide a safe option for you and your family. Self-Test - Two Indicator Light provides simple, intuitive feedback on power and protection status. If the indicator (LED) glows green, you have installed the GFCI receptacle correctly and it is working properly, The GFCI outlet automatically conducts a Self-Test(the red light will blink once) every 1-16 minutes. When the GFCI receptacle reaches the end of its' life the red indicator will turn on, it reminds you to replace the outlet in time. Easy Installation - Back and side wiring, no extra wiring required. The package includes detailed instruction. Ideal for use in indoor occasions such as homes, offices, hospitals, schools. Certification and Warranty - UL certified for top quality standards and safe operation, 3GRACE Brand proudly provides warranty on all Outlet Receptacle products to ensure 106% satisfaction.