> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/boomerang-3-domain-administrator-manual/dashboard/alarms_and_warnings/alarm-limits.md).

# Alarm limits

The alarm limits may be defined as warnings or alarms.

A warning shall be defined with the limits that are still acceptable but outside the standard values. If warnings are observed, then the user shall check the equipment, or the location monitored for a possible reason of the deviation to prevent any future problems. This check may be not immediate as the conditions are still allowed but they are close to the limits.

An alarm shall be set using the maximum or minimum allowed range limits. An alarm generated by Boomerang requires immediate user intervention.

Both warnings and alarms are defined in the same way. The differences between them are:

* the warnings are marked yellow and are inactivated automatically when the readings are back inside the limits,
* the alarms are marked red and must be signed by a user to inactivate them.

Both warnings and alarms have a filter parameter described in [Alarm filter](/boomerang-3-domain-administrator-manual/dashboard/alarms_and_warnings/alarm-filter.md) chapter.

They can also be defined as valid only during certain period of a day.

An example of the readings graph with alarm limits is shown in [Graph tab](/boomerang-3-domain-administrator-manual/dashboard/object_view/detailed-object-view/graph-tab.md#alarm-limits).


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