A UPS is an electrical protection system in case of power failure, it will protect your equipment against overvoltages, voltages and free interruptions.
Different type of UPS:
Power factor between 0.4 and 0.6
Single-phase input (220 volts)
Single-phase output (220 volts)
Option: stop the software (ex: IP Pro Evolution)
Full load autonomy 5 to 7 minutes
How does a line-interactive UPS function?
How does an On-line UPS function?