The Eaton 3S provides power and surge protection for desktop computers, wireless networks, game consoles and other important devices in the home or office. During a power outage, the Eaton 3S provides emergency power via the battery and advanced overvoltage protection to prevent damage from lightning strikes or mains surges. In the event of a power failure that lasts longer than expected, Eaton software will safely shut down your computer without losing data. To protect routers from interference over the data line, the Eaton 3S also includes RJ11/xDSL data line protection