If you have not gone through the Alarm Management FAQ we recommend starting there.
You can review alarm reports and actions made to the alarms like creating, triggering, acknowledging, notes, etc by going to Reports > Alarms
From there you will select your Report settings:
Select your time period.
Report delivery.
Filter reports by and Filter items.
Click Search.
At the bottom of your screen, you will see your search results.
You can export your Alarm report to CSV by clicking the export icon as seen in the image below.
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