Tripp Lite's OMNIVS1500 line interactive UPS system offers voltage regulation, surge suppression and battery support for sensitive electronics. Internal UPS batteries support entry level PC systems for up to 75 minutes during power failures. Automatic Voltage Regulation (AVR) circuits regulate brownouts as low as 75 and overvoltages up to 147 volts back to usable 120V levels without using battery power. Includes 5 battery supported outlets plus 3 additional surge suppression only outlets. USB port enables optional unattended system shutdown. PowerAlert software available via free download from www.tripplite.com. Built-in data line suppression for equipment with single line TEL/DSL or network Ethernet. Built-in audible alarm and 5 front panel LEDs. 1500VA power handling ability. Offers 4 minutes battery runtime with a full load of 1500VA and 8.5 minutes with a half load of 750VA. Supports hot-swappable battery replacement via built-in access panel.