The SMART1500LCDT SmartPro LCD 120V 1500VA/900W Line-Interactive Uninterruptible Power Supply provides battery backup and AC power protection against blackouts, brownouts, power surges and line noise that can damage electronics or destroy data. Ideal for backing up your desktop computer or audio/visual components, this line-interactive UPS switches to battery backup mode in milliseconds to keep your connected equipment running long enough to save files and shut down safely with no data loss. While all ten NEMA 5-15R outlets protect against surges, five outlets also provide up to 90 minutes of UPS battery support for a basic desktop PC and LCD monitor and up to 10 minutes of support at half load (450W). Automatic voltage regulation (AVR) corrects undervoltages as low as 92V and overvoltages as high as 150V without using any battery power. EMI/RFI noise filtering improves your equipment's performance and prevents damage. A 650-joule surge suppression rating protects your equipment from harmful power surges. NEMA 5-15P plug with six' (1.8m) cord connects to any NEMA 5-15R socket. Large LCD screen shows real-time input voltage, overload, AVR, remaining battery runtime and battery statuses at a glance. Alarm sounds to indicate power loss or low battery. With PowerAlert software (available via free download), SMART1500LCDT enables safe unattended system shutdown in case of a prolonged power failure.