User's Manual
298
Parameter Description
Intensity change
Check the box here, system can generate an alarm once the audio volume
becomes strong.
Period Define a period during which the function is active.
Sensitivity
The higher the value is, the easier it is to trigger an alarm. But at the same
time, the false alarm might occur. The default value is recommended.
Threshold
You can set intensity change threshold. The smaller the value is, the higher
the sensitivity is.
Period Define a period during which the function is active.
Alarm Out
The alarm device (such as lights, sirens, etc.) is connected to the alarm
output port. When an alarm occurs, the NVR device transmits the alarm
information to the alarm device.
Latch
When the alarm ends, the alarm extended for a period of time. The time
range is from 0 seconds to 300 seconds.
Show Message Check box to enable a pop-up message in your local host PC.
Alarm Upload
Select the check box. When an alarm occurs, the NVR device uploads an
alarm signal to the network (including the alarm center).
●
This function is for some series products only.
●
You need to set the alarm center first. For details, see "4.11.14 Alarm
Center".
Send Email
Select the check box. When an alarm occurs, the NVR device sends an email
to the set mailbox to notify the user.
You need to set the email first. For details, see "4.11.11 Email".
Record Channel
Select the check box and select the needed recording channel (support
multiple choices). When an alarm occurs, the NVR device activates the
channel for recording.
You need to enable intelligent recording and auto recording first. For
details, see "4.1.4.6 Schedule".
PTZ Activation
Select the check box and click Setting to select the channel and PTZ action.
When an alarm occurs, the NVR device associates the channel to perform
the corresponding PTZ action. For example, activate the PTZ in channel one
to turn to the preset point X.
●
Tripwire alarm supports to activate PTZ preset point only.
●
You need to set the corresponding PTZ actions first, see "4.4.4 Calling
PTZ Functions".
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