High online efficiency Reduces utlility costs, generates less heat. 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. 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. Boost & Trim Automatic Voltage Regulation (AVR) Gives higher application availability by correcting low & high voltage conditions without using the battery (not available on all models). 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. Network manageable Provides remote power management of the UPS over the network. Audible alarms Actively let you know if the unit is on battery, if the battery is low or if there is an overload condition. LED status indicators Quickly understand unit & power status with visual indicators. Serial connectivity Provides management of the UPS via a serial port. Disconnected battery notification Warns when a battery is not available to provide backup power. For the replacement battery please see Quick find 2987.