Automatic Voltage Regulation (AVR) gradually increases low voltage and reduces high voltage to levels suitable for your devices. Surge protection devices safeguard connected equipment from surges on data lines. PowerChute Personal Edition operating system compatibility supports numerous operating systems and processors. USB connection allows access to additional management features of your UPS via a USB port. Warning tones alert users when the status of the power supply or UPS system changes. LED status indicator provides a quick overview of the system and power supply status. Intelligent battery management optimizes the performance, lifespan, and reliability of batteries. Automatic self-test conducts periodic battery self-tests for timely replacement.