The Tower Manufacturing 30339005 model 15 amp, 3-wire ground fault circuit interrupter (GFCI) outlet adapter converts standard indoor electrical outlets into GFCI outlets to protect users from shock, electrical fire, or electrocution. It is portable for instant GFCI protection and works with any standard 3-wire outlet. It has a red, LED power indicator and a test/reset button that allows for periodic testing to ensure operability. The outlet adapter operates at 125V/60Hz with 15 amp service and a maximum power supply of 1,875 W. It is Underwriters Laboratory (UL and cUL) listed and Occupational Safety and Health Administration (OSHA) compliant. It is National Electrical Manufacturers Association (NEMA) rated for indoor use in offices, schools, labs, homes, and workshops. When used according to manufacturer€s recommendations, this product is covered by a two-year warranty against defects in workmanship or materials.

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 manufactures electromechanical devices in company-owned facilities in Shenzhen, China and Providence, RI. The company, founded in 1957, is headquartered in Providence, RI. Tower products include ground fault circuit interrupters (GFCIs), appliance switches, thermostats, wiring devices, and other connectors, controls and electrical devices.