EZWatch Pro 3.1 - Manual (Page 61)

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If user runs recording by m otion detection and enable “Pre-alarm ‖, the
system can record videos at last 1-30 seconds (Base on the recording
rate) before event trigger base on the system RAM buffer.
4-1-2-4. Video Loss
This function is to trigger the DVR to send a notification when video losses occur.
Please click on the ―V ideo Loss‖ tab and follow the instructions below for the
setting.
 Enable sound alarm –To set an audio warning when the video loss occurs.
 Enable notification -- Each camera can have its own unique notification,
and you can set up different ways to notify someone. Please refer to page
41 to 44 for the notification setting.
 Trigger speed dome –This function is to set the connected speed dome to
move to the multiple preset positions when the video loss occur. Please refer
to page 45 to 46 for the detail of the “S elect position” section setting.