About alarms

An alarm is a type of entity that describes a particular trouble situation that requires immediate attention and how it can be handled in Security Center. For example, an alarm can indicate which entities (usually cameras and doors) best describe it, who must be notified, how it must be displayed to the user, and so on.

The basic properties of an alarm are:

For information about monitoring, acknowledging, and investigating alarms in Security Desk, see the Security Center User Guide.

Alarm priority

In Security Desk, alarms are displayed in the Alarm monitoring task and the Monitoring task by order of priority (this is evaluated every time a new alarm is received). The highest priority alarm is displayed in tile #1, followed by the second highest in tile #2, and so on. When two alarms have the same priority value, priority is given to the newest one.

When a new alarm is received in Security Desk with a priority level identical or higher than the current alarms displayed, it pushes the other alarms down the tile list.

When an alarm is acknowledged in Security Desk, it frees a tile for lower priority alarms to move up.

Video recording on alarms

When an alarm is triggered that has cameras attached to it, you can make sure that the video related to the alarm is recorded and available for future alarm investigations.

The amount of time that the video is recorded for (called the guaranteed recording span) is defined by two settings:
  • The alarm recording duration: Click to hide description
    Number of seconds that the Archiver records video for after the alarm is triggered. This option (Automatic video recording) is set in the alarm Advanced tab.
  • The recording buffer: Click to hide description
    Number of seconds that the Archiver records video for before the alarm was triggered, to make sure that whatever triggered the alarm is also recorded. This option (Time to record before an event) is set in the Archiver Camera default settings tab, or for each camera individually.
If an alarm is triggered from a camera event (for example Object removed), then the camera that caused the event is also attached to the alarm and starts recording.
IMPORTANT: The recordings are dependent on the archiving schedules. If recording is disabled when the alarm is triggered, no video is recorded.