Dahua HDCVI User Manual page 186

and trigger record, snapshot, alarm operation and etc. See Figure 4-123.

Channel: Select a channel you want to enable face detect function.

Alarm face number: Once the detected human face number reaches the threshold you
set here, system can generate an alarm.

Human face RO (region of interest): Check the box, system can highlight the human
face region.

Enable: Check the box here to enable face detect function.
For detailed setup information, please refer to chapter 4.11.3.2.1.
4.11.3.4 Alarm
Before operation, please make sure you have properly connected alarm devices such
as buzzer.
In the main menu, from Setting->Event->Alarm, you can see alarm setup interface.
For analog channel, the interface is shown as in Figure 4-124 and Figure 4-125
For HDCVI channel, there are three alarm types. See Figure 4-124 to Figure
For digital channel, there are four alarm types. See Figure 4-124 to Figure 4-128.

Local alarm: The alarm signal system detects from the alarm input port.

Network alarm: It is the alarm signal from the network.

HDCVI: System can get the camera temperature, smoke, external alarm and set
corresponding alarm activation operation.
Figure 4-123
4-126.
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