I bought a TrippLite Internet Office UPS surge protector in January 2009. I have misplaced the manual. Recently it began to beep for no reason. There is no power failure. It was so annoying I had to unplug it.What is causing the problem and what can I do about it?
Computers & Internet - Tripp Lite - Tripp-Lite Internet550U 550VA Office UPS Power Backup...
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