A mini-tower UPS with line interactive topology, the UltraTech 0E-1000V9RD provides battery backup and surge protection for desktop computers, workstations, network devices and home entertainment systems. The 0E-1000V9RD uses Automatic Voltage Regulation (AVR) to correct minor power fluctuations without switching to battery power, which extends battery life and is essential in areas where power fluctuations occur frequently.