✅【Innovative Dual Protection System】 Features twin solenoid and double silicon controlled rectifier (SCR), ensuring an always-on GFCI protection to ground fault, which doubles the service life of GFCI as an added layer of protection. ✅【Patented Self-Test Every 5 Seconds】 This GFCI outlet automatically performs a self-test every 5 seconds—far more frequently than the UL standard of every 3 hours—to ensure it's always ready to protect against electrical shock. In the event of a ground fault, it cuts power in just 0.025 seconds, providing fast and reliable safety for your home. ✅【Durable and Ultra-Safe Design】Built with premium high-impact resistant thermoplastic materials. Endurance-tested over 6,000 times—twice the UL requirement. Features advanced safety features like 6kV surge protection, Reset-Disable, and Reversed Wiring Prevention to ensure long-lasting performance and maximum protection. ✅【Easier to Install】 ELEGRP GFCI outlet is designed with a thinner profile to make more room for wires in the wall box. Works with 12 or 14 AWG for side wire and back wire. ✅【UL and FCC Certified】ELEGRP GFCI outlets are rigorously tested to meet or exceed UL943 & UL498 standards for safety and reliability. With both UL and FCC certifications, you can trust this outlet to provide dependable performance while adhering to strict regulatory requirements. ELEGRP GFCI Outlet 20 Amp, Self-Test GFI Electrical Outlet with Narrow Design, GFCI Receptacle with LED Indicator, UL Listed, Black, Wall Plate Included, 2 Pack