This Tower Manufacturing 30339015 15-amp, 125V GFCI outlet adapter is a ground fault circuit interrupter that shuts off an electric circuit when the current flows along an unintended path, providing personal protection from ground faults and open neutral conditions. It has an automatic reset that restores functioning following a power interruption. This outlet adapter has a three-prong National Electrical Manufacturers Association (NEMA) 5-15P plug to connect to grounded outlets and converts any standard indoor electrical outlet into five grounded NEMA 5-15R outlets for heavy duty electrical tools and devices. It is compatible with 15-amp, U-ground, 2- or 3-wire outlets. The outlet box has an impact-resistant case for durability and safety, a red LED indicator to inform users when the power is on, and test and reset buttons for periodic testing of the device. This GFCI outlet adapter is suitable for use in the home, office, or workshop.SpecificationsTrip level4 – 6 mA, Class AVoltage125VAmperage15 ampWattage1,875WHertz60 HzOperating Temp-31 to +150 degrees FStandards metUL (Underwriters Laboratories) listedCUL (Canadian Underwriters Laboratories) listed Ground fault circuit interrupters (GFCI) are used to monitor the amount of current going to and returning from equipment flowing through a circuit. If the flow is irregular, GFCIs interrupt the current. They help to prevent electrical fires and to reduce the risk of shock, burns, or electrocution. Designed to shut off power within 1/30th of a second, they are used with power tools, on construction sites, and near water sources in homes (kitchens, bathrooms, and laundry rooms).Tower Manufacturing makes electromechanical devices such as ground fault circuit interrupters (GFCIs), appliance switches, thermostats, and controls. The company, founded in 1957, is headquartered in Providence, RI.