Tripp Lite INTERNET-550SER 8-Outlet 550VA/300-Watt ...

INTERNET550SER standby UPS offers protection from blackouts, brownouts and surges on both AC and dialup modem lines. Provides seamless battery derived AC output during blackouts and severe brownouts so that connected equipment can be shut down without data loss. Compatible with 120V / 60 Hz applications in USA, Canada, Mexico and other countries.