Tim:
> > Is there a communication link between UPS and PCs?  You do want a
> > UPS to send a shutdown message *before* its battery goes flat.

Michael D. Setzer II:
> Unfortunately, Guam has poor power. Even with UPS units 
> sometimes get dips and spikes that will reboot or lock machines. 
> Tried different UPS units, but doesn't seem to matter. And 
> sometimes it is some are fine and other go off or lock, and then it 
> changes. On UPS shows incoming voltage, and it would dip to 85v 
> and then go back to 120v. 

You'd need the type that don't work by switching their output between
directly connecting to the AC mains or the UPS, that's just a fallover
system.

But the ones where their mains input always powers the battery charger
and the battery output always powers their output inverter, an actual
uninteruptable power supply.

-- 
 
uname -rsvp
Linux 3.10.0-1160.119.1.el7.x86_64 #1 SMP Tue Jun 4 14:43:51 UTC 2024 x86_64
(yes, this is the output from uname for this PC when I posted)
 
Boilerplate:  All unexpected mail to my mailbox is automatically deleted.
I will only get to see the messages that are posted to the mailing list.
 

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