Surge-protected power strips are primarily designed to provide lightning and over-voltage protection for electrical appliances connected to low-voltage AC power systems (220V). They are suitable for devices such as computers, communication equipment, fax machines, high-end audio systems, audiovisual equipment, precision instruments and meters, as well as televisions, routers, and washing machines. In areas prone to frequent lightning activity, these power strips are common electrical protection devices used in both homes and offices.