Safy Surge ProtectorProtects your exposure through the electrical mains only. It does not protect television aerials or phone lines. Provides power output to a max of 4000W refer to appliance label close to power cables for appliance wattage specification before use with this product. Protects 2 appliances. Built in safety shutters act as a preventative measure against children inserting fingers or objects into plug sockets. Quicker reaction time ensures full protection