Sine-wave output: True sine-wave output with less than 3% THD. Double Conversion Design: Zero transfer/ complete isolation of input AC.UPS Monitoring Software: Powerful true RS232 communication via the enclosed software to manage and safely shutdown operating systems. Network RJ45/11 protection: Complete powerful network and phone line surge protection.AC Surge Suppressor: Powerful multi-stage surge components that exceed IEEE requirements.SNMP Slot Option: Allows for remote monitoring and control via www.Sleep Mode: Worry free battery management. The unit turns itself off after ten seconds to conserve battery power when no power needs are detected. Battery level indicators: LED?s indicate battery levels. Load Sensing: The incorporated LED load indicators allow IT professionals to manage backup time and balance power loads. Low Battery indicators: The low battery level indicator will warn of eminent UPS shutdown two full minutes before unit shuts down.Replace Battery indicators: A preventative measure that indicates when batteries must be replaced to prevent server crashes.