[High Efficiency & Safety] This socket is built around exceptional electrical performance, supporting a voltage-frequency combination of 125VAC/60HZ and a current carrying capacity of up to 20A, ensuring stable and safe operation in various standard power environments; ETL certification [LED Light & Self-test] The GREEN LED LIGHT stays ON indicating the GFCI socket is functioning properly. The RED LED LIGHT BLINKS ONCE every 40 seconds indicating a successful self-test. If RED LED LIGHT stays ON, the test has failed and the GFCI must be immediately replaced. [Integrated Panel] Combining the socket and switch into a sleek white panel, is not only pleasing but also maximizes space utilization, especially ideal for older homes with limited openings; the GFCI socket comes with a built-in single-pole switch, which can be wired to function as a regular switch [Child Safety & Weather Resistance] Equipped with TR (tamper-resistant) features to effectively prevent children from inserting