A rack/tower UPS with line interactive topology, the Smart App CPS1500AVR provides battery backup (using simulated sine wave output) and surge protection for department servers, workgroup servers, workstations, network devices, and telecom installations without active PFC power supplies. The CPS1500AVR 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 CPS1500AVR comes with a three-year warranty and a $300, 000 Connected Equipment Guarantee.