Eaton Tripp Lite SMART1500LCD 1500VA 900W UPS Backup delivers reliable line interactive sine wave power protection at 120 volt AC for home office servers network equipment and workstations. Automatic voltage regulation AVR ensures clean stable power during brownouts overvoltages and power fluctuations. LCD display with real time status icons provides battery load input output voltage and runtime monitoring. Featuring eight NEMA 5-15 outlets USB and DB9 serial ports plus network surge protection this battery backup supports routers switches storage devices and sensitive electronics. Rack tower design fits two unit equipment racks or desktop use with integrated six foot power cable and phone line surge suppression. Three year limited warranty included. Free Tripp Lite PowerAlert software enables shutdown scheduling and remote monitoring. Surge protection battery runtime 3.5 minute at full load 8 hour recharge time management port sine wave output ideal for critical IT equipment.