Dahua N41C1P, User Manual, Page: 230 / 377

User's Manual
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You can configure up to four detection regions. When any one of the four
regions activates an alarm, the channel where this region belongs to will activate
an alarm.
6) Right-click to exit the page.
Step 4 Click Setting next to Schedule to configure the alarm schedule.
Step 5 Configure the anti-dither period.
If multiple alarms occur during the anti-dither period, the system only record the
event once.
Step 6 Configure alarm linkage. For details, see Network Video Recorder_User's Manual .
Step 7 Click Apply.
5.10.6 Audio Detection
Background Information
The system can generate an alarm once it detects the audio is not clear, the tone color has
changed or there is abnormal or audio volume change.
Procedure
Step 1 Select Main Menu > ALARM > Audio Detection.
Step 2 Select a channel and then click
to enable detection of audio exception and
intensity change.
●
Audio Exception: The system generates an alarm when the audio input is
abnormal.
●
Intensity Change: Set the sensitivity and threshold. An alarm is triggered when
the change in sound intensity exceeds the defined threshold.
Step 3 Click Setting next to Schedule to configure the alarm schedule.
Step 4 Configure alarm linkage. For details, see Table 5-43.
Step 5 Click Apply.
5.10.7 Thermal Alarm
Background Information
After receiving the alarm signal from the connected thermal devices, the system can
recognize the alarm type, and then trigger the corresponding alarm actions.
The system supports heat alarm, temperature (temperature difference) and cold/hot alarm.
●
Heat alarm: The system generates an alarm once it detects there is a fire.
●
Temperature (temperature difference): The system triggers an alarm once the
temperature difference between two positions is higher or below the specified threshold.
●
Cold/hot alarm: The system triggers an alarm once the detected position temperature is