An event is an action initiated by a user-defined trigger source; it is the causal arrangement of the
following three elements: Trigger, Event Schedule, and Action�
Trigger
This is the cause or stimulus which denes when to trigger the Network Camera. The trigger source can
be congured to use the Network Camera’s built-in motion detection mechanism or external digital input
devices�
There are several choices of trigger sources as shown below�
Select the item to display the detailed
conguration options.
■ Video motion detection
This option makes use of the built-in motion detection mechanism as a trigger source� To enable this
function, you need to congure a Motion Detection Window rst. For more information, please refer to
Motion Detection on page 67 for details�
■ Periodically
This option allows the Network Camera to trigger periodically for every other dened minute. Up to 999
minutes are allowed�
■ Digital input
This option allows the Network Camera to use an external digital input device or sensor as a trigger
source� Depending on your application, there are many choices of digital input devices on the market
which helps to detect changes in temperature, vibration, sound, and light, etc�
■ PIR
This option allows the Network Camera to trigger when the built-in PIR (Passive Infrared) sensor
detects any motion objects by their thermal to prevent occurrences of false alarms�
■ System boot
This option triggers the Network Camera when the power to the Network Camera is disconnected�
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