APC Smart-UPS, 600 Watts /1000 VA, Input 230V / Output 230V, Interface Port USB (Universal Serial Bus) Green mode Patent-pending operating mode that bypasses unused electrical components in good power conditions to achieve very high operating efficiency without sacrificing any protection. Pure sine wave output on battery Simulates utility power to provide the highest degree of compatibility for active PFC (power factor corrected) servers & sensitive electronics. LCD Status Display Provides key UPS status at a glance. Multiple status indicators with load & battery bar graphs. High online efficiency Reduces utlility costs, generates less heat. Cold-start capable Provides temporary battery power when the utility power is out. Temperature-compensated battery charging Prolongs battery life by regulating the charge voltage according to battery temperature. Intelligent battery management Maximizes battery performance, life, & reliability through intelligent, precision charging. Power conditioning Protects connected loads from surges, spikes, lightning, & other power disturbances. Temperature-compensated battery charging Prolongs battery life by regulating the charge voltage according to battery temperature. Automatic restart of loads after UPS shutdown Automatically starts up the connected equipment upon the return of utility power. Automatic self-test Periodic battery self-test ensures early detection of a battery that needs to be replaced. Disconnected battery notification Warns when a battery is not available to provide backup power.