ELEGRP GFCI Outlet 20 Amp, Self-Test GFCI Electrical Outlet with Thinner Design, TR Tamper Resistant GFCI Receptacle, Ground Fault Circuit Interrupters with Wall Plate, UL Listed, White 10PC

【Patented Self-Test Every 5 Seconds】 The GFCI outlet automatically conducts self-test (auto-monitor) every 5 seconds to ensure the GFCI is continually working to protect people from electrocution, which exceeds the UL standards of self-test frequency of 3 hours. Break the circuit in just 0.025 seconds when ground fault occurrence in the circuit. 【Tamper Resistant】 Tamper-resistant shutter system prevents young children from inserting unwanted objects into the outlets. 【Durable and Long Service Life】Constructed with premium high-impact resistant thermoplastic materials and rational structure design, ensures superior strength and durability. Performed 6000+ times endurance factory test, which is twice the testing times of UL standard. 【Always Safe】 Strictly tested as per or exceeds UL943 & UL498 requirements. The surge protection and lightning protection function withstanding 6 kilovolt. Innovated Reset-Disable System ensures the GFCI cannot be reset once it reaches the “end of life”. Reversed Wiring Prevention makes it no power at the GFCI outlet and downstream if the LINE / LOAD is wired incorrectly.