Features | 1.44kVA/1.44kW/120V Battery Backup for Distributed IT, Telecom or Enterprise DeploymentsThis line-interactive UPS system provides reliable battery backup and AC power protection against blackouts, brownouts, surges and line noise that can damage your valuable IT equipment. The SMART1500RXLTAA is ideal for large and small network devices, high-end workstations, storage and security equipment in labs, server rooms and data centers.Reliable, Expandable Battery Backup Keeps You Operational Through Power OutagesThe field-replaceable, hot-swappable VRLA battery modules allow you to work through short power failures and give you enough time to safely save files and shut down your system in case of a prolonged blackout. Switchover from line to battery power happens within milliseconds to maintain continuous operation of connected equipment without interruption or rebooting. Extra runtime is available by connecting up to four optional extended battery modules (BP48VRXLTAA, sold separately). The SMART1500RXLTAA restarts automatically once power is restored, regardless of battery charge level, saving you a costly site visit.Automatic Voltage Regulation (AVR) Corrects Low- and High-Voltage ConditionsBuilt-in AVR corrects abnormal voltage conditions without using the battery. The SMART1500RXLTAA maintains regulated 120V nominal output during brownouts and overvoltages from 80V to 151V while keeping the battery fully charged and ready to take over in case of power failure.Pure Sine Wave Output and Unity Power FactorPure sine wave output power ensures maximum stability while unity power factor ensures the most watts possible at each power rating, providing maximum compatibility with sensitive equipment.Optional LXE Network Management Card Allows Remote Control and Access 24/7The WEBCARDLXE (sold separately) enables access to advanced features like switchable load banks, a