The APC Smart-UPS X 3000VA Rack/Tower LCD 100-127V provides a continuous supply of battery power for connected devices in the event of an AC power loss. It also safeguards equipment from surges, spikes, lightning, and electrical disturbances. An on-board LCD display, available in multiple languages, gives you a comprehensive and precise readout on critical system functionality. A unique feature of this UPS is green mode which, by bypassing unused electrical components in good power conditions, saves energy costs while reducing the impact on the environment.