A compact UPS with line interactive topology, the CyberPower AVRG900LCD provides battery backup (using simulated sine wave output) and surge protection for desktop computers, workstations, networking devices, and home entertainment systems. The AVRG900LCD uses automatic voltage regulation (AVR) to correct minor power fluctuations without switching to battery power, which extends battery life. Avr is essential in areas where power fluctuations occur frequently. The AVRG900LCD comes with a three year warranty (including coverage of batteries) and a $200,000 connected equipment guarantee.