Self Test GFCI OutletCompared to the traditional GFCI, the smarter GFCI (Ground Fault Circuit Interrupter) boasts an added self-test function. If not functioning properly, it will indicate by illuminating a red light. Self-Testing occurs every few minutes. You don't need to test manually anymore.Provides continuous ground fault protection. Safe Outlet with ResetAt the same time, it also functions as a GFCI outlet with GFCI functionality.Quickly shuts off power within 0.025 seconds.Provide electric shock protection and prevent from electrical fire caused by ground fault. Suitable for both indoor and outdoor use, particularly in damp environments where electrical safety protection is crucial.20 amp GFCI wall plug, safeguarding your high-powered large appliances and high-precision instruments. Weather ResistantGFCI 120v electrical outlet 20 amp white,Moisture proof and Resistant to atmospheric corrision.Crafted with high-quality, advanced technological components, this