Tripp Lite''s OMNIVSINT1500XL line interactive UPS system offers voltage regulation, surge suppression and expandable battery support for sensitive electronics. Internal UPS circuits support entry level PC systems for up to 75 minutes during power failures. Automatic Voltage Regulation (AVR) circuits regulate brownouts as low as 151 and overvoltages up to 282 volts back to usable 230V levels without using battery power. Includes 8 IEC320-C13 outlets with battery support and AC surge suppression. USB port enables unattended system shutdown. PowerAlert software available via free download from www.tripplite.com. Built-in single line RJ jacks. Built-in audible alarm and 4 front panel LEDs indicate line power status, battery power status, battery low/replace status and voltage boost operation. 1500VA power handling ability. Offers 4.5 minutes battery runtime with a full load of 1500VA and 13 minutes with a half load of 750VA. Supports hot-swappable battery replacement via access panel.