HeroSpeed NVR - Page 206

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Figure 6-28
6.5.5.5 Local Alarm
 Alarm Input
In the main interface, click "Configuration →System →Local Alarm→Alarm
Input" to enter the Alarm Input interface, as shown in Figure 6-29 below.
Here you can set the alarm input of the device to the alarm of the external
alarm device.The alarm input setting is consistent with the local setting of
the NVR.