Samsung 4 channel DVR User Manual page 84

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Motion Detection
You can set the motion detection mode and the sensitivity
as well as the alarm output type and the duration.
• Motion Region
Set the target motion detection area
Video Loss Detection
You can set the alarm output time if a video loss occurs.
Alarm Schedule
You can schedule the alarm output according to the day of
the week and the time.
The default setting is Event Sync, which activates the alarm
only if an event occurs.
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