Protecting Electrical Equipment at the Source Shuts off overcurrent and ground faults in electrical equipment at the outlet. Plug-in type ground fault circuit interrupters detect and shut off ground faults and overcurrent in connected equipment at the outlet. Grounded waterproof outlet connector included With anti-removal aid (prevents the main unit from falling out of the outlet) Length (mm) (cable): Approximately 2000 Operating temperature range (°C): 0 to 40 External dimensions (mm): 81 x 45 x 38