CyberPower PR2200ELCDSL Manuel D'utilisation page 8

complete power loss, severe brownout, or over-voltage, the UPS relies on its internal battery to supply
consistent output voltage. The INPUT voltage meter can be used as a diagnostic tool to identify
poor-quality input power.
12. EVENT: This meter records the number of power outages.
13. MUTE: This icon appears whenever the UPS is in silent mode. The alarm does not beep during
silent mode until the battery reaches low capacity.
14. AVR (Automatic Voltage Regulation): This icon appears whenever your UPS is automatically
correcting low AC line voltage without using battery power. This is a normal, automatic operation of
your UPS, and no action is required on your part.
For more information about functions setup, please refer to the Function Setup Guide.