Damaging surges associated with lightning or utility problems can travel along your utility and data lines, damaging your electronic devices and destroying your valuable data. Even smaller everyday surges can degrade the performance of your electronics and decrease their life. The APC 8-Outlet Essential SurgeArrest Surge Protector (Telephone Protection) provides a high level of protection for your computers, electronics and connected devices, as well as providing surge protection for your phone lines. Its state of the art circuitry offers excellent protection for sensitive electronic equipment against large surges and multiple surge events.