GFCI is a high-sensitivity, fast-response leakage protection device, which can quickly cut off the circuit and isolate the fault point when a dangerous ground fault leakage occurs, so as to avoid the occurrence of electrical accidents and ensure personal safety. The working principle of GFCI is that when there is equipment leakage or human body gets an electric shock, part of the current flows into the ground, and when the current flowing through the live wire and the neutral wire is not equal (the normal situation is equal), the GFCI monitors the current difference between the live wire and the neutral wire. Once the difference is greater than 6mA, the power supply can be cut off at the moment of 0.025 seconds, so as to ensure the safety of people and property. Widely used in homes, offices, hospitals, schools, hotels, factories and other outdoor venues. Specification: Grounding: Standard GroundingRated Voltage: 120VRated Current: 20AmpApplication: Residential/General-PurposeElectrical Characteristics: AC120V/20AmpColor:WhiteUnloaded plug≥5000Sec Loop detection with automatic monitoring functionMeet the standard:UL,CULHousing material flame retardant gradesTripping threshold:5mA Tripping time 50MΩ(DC500V)Short-circuit current:10KA Insert and Draw Frequency>10000 timesTemperature,humidity:-35℃ ~ +66℃; 20% ~ 90%Storage Temperature,Humidity: -20℃ ~ +85℃; 10% ~ 95%RH