Tripp Lite's SmartPro Compact Rackmount Uninterruptible Power Supply (UPS) offers line interactive voltage regulation, network grade surge suppression and long lasting battery support for critical network hardware during blackouts and extended power failures. Larger internal batteries and higher rated wattage makes these systems ideal for network and telecom wiring closets and other limited-space installations. SMART1500CRMXL 1500VA/1440 watt UPS offers battery-derived sine wave AC output during power failures and extreme voltage variations. Automatic Voltage Regulation (AVR) provides two levels of voltage boost during brownouts and one level of voltage cut during overvoltage conditions to maintain regulated 120V nominal output over an input range of 83-145V. Network management interfaces support simultaneous communications via USB port, DB9 serial port and optional SNMP/Web management accessory card slot. 2 Year Warranty standard. 3 Year Warranty with product registration.