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Re: Beeping after power irregularities?

On Tue, 6 Mar 2018, Dan Ritter wrote:

On Tue, Mar 06, 2018 at 10:50:52AM -0800, James H. H. Lampert wrote:
Our AC power just blinked several times.
one-second beeps, approximately every two seconds

That really sounds like a UPS. Do you have diagnostics access
for it?

Sounds to me like a UPS buck-boost in action.  What is your UPS unit?