800VA UPS Backup System with AVR offers eight outlets (four adapter-sized), 6' cord and battery runtime of up to 85 minutes. Guards against surges, spikes, sags, brownouts and other abnormalities. The automatic voltage regulation, AVR, steps up low voltages to safe output levels. Included Personal Edition Software automatically saves and closes open files, then safely shuts down the computer. Also features 100V-140V input voltage on utility; 120V +/-5 percent output voltage on matter; 60Hz output frequency on battery; 890 Joule rating; 1 RJ11 input/2 output, and 1 RJ45 input/2 output. To pick the correct UPS system, total the watt requirements of your equipment and add 30 percent extra capacity to ensure the battery backup will function. If your equipment does not give a wattage rating, simply multiply amps x volts to get your watt requirement. UPS systems are not designed for printers, fax machines, heaters or fans.