0.025 Seconds to Break the CircuitWhen the leakage current in the circuit or load equipment or the ground neutral fault reaches to the 4mA~6mA, the GFCI plug can break the circuit automatically within 0.025 Seconds (25ms). Wide range of scenariosRated up to 20Amp, this outlet is capable of supporting residential/educationgal facilities/airports/restaurants/commercial offices uses without concern about overload. LED Indicator & Impact ResistancePovided with working power light indicate, auto-monitoring, and reverse line-load miswire protection,of which the auto-monitoring function exceeds the requirement of 5.16, UL943. Durable construction made of high impact-resistant polycarbonate thermoplastic material for long service life. Easy InstallationThe GFCI receptacle replaces any wall outlet and utilizes existing wires. It's back and side wired for broad compatibility and diverse wiring needs. It can fit in standard wall boxes and is compatible with decorator wall plate