The Dell DLT1500RM2U 1500RM Smart UPS is the most popular UPS in the world for servers, storage and network power protection. In addition to legendary reliability and manageability, Smart UPS have extremely high efficiency at low, medium and high lead levels making them ideal for today's multi core or virtualized servers that have varying load consumption. Smart UPS feature a 16 segment LED display, extended range automatic voltage regulation AVR , and pure sine wave output on battery.