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We had a power outage for about an hour today. About 10 minutes after the outage, one of my compact CyberPower UPS units started beeping. It was powered on, but nothing was plugged into it, so no power draw (I use it for my AC adapter for the laptop and external USB drives).

But instead of the typical two-beep signal or continuous beeping, it was a series of five quick beeps every minute or so. This was happening despite having set the unit to mute warning sounds.

A call to CyberPower tech support proved fruitless. The tech was unaware of any five beep sequence for this particular UPS (or any other one). It wasn’t in any of the documentation available to him. Thanks for the help. :eyeroll: