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4.7.5 Alarm Input / Output
4.7.5.1 Alarm Input
Configure the alarm mode, arming schedule, and alarm-triggered actions for external alarm input
devices.
The external alarm input devices include devices connected to the ALARM IN interfaces on the
NVR and the ALARM IN interfaces on the cameras. For example, access control devices.
1. Go to Menu > Alarm > Input/Output > Alarm Input
2. Select the alarm input channel to be set.
• A<- 1: A refers to the ALARM IN interfaces on the NVR, 1 means the first ALARM IN interface.
Likewise, A<-2 means the second ALARM IN interface on the NVR . The number of ALARM IN
interfaces may vary with NVR model. See the device datasheet for specifications.
• D <- 1: D refers to channels, the number means channel ID. D<-1 means the alarm input device
is connected to the ALARM IN interface of the camera whose channel ID is 1. Likewise, D <-2
means the alarm input device is connected to the ALARM IN interface of the camera whose
channel ID is 2. The number is not displayed if the camera has no ALARM IN interface.
3. Click
to configure alarm input parameters. After configuration, click OK.
Item
Alarm Input
Alarm Input Name
Alarm Type
Description
Select Enable to enable the alarm input.
The default name is the alarm input number. You may rename it
as needed.
This item is applicable when Alarm Input is enabled. The default
is N.O..
• N.O. : Choose this option if the alarm input device is normally
closed. The device opens the circuit to input an alarm, triggers
the NVR to open the alarm circuit and report an alarm.
• N.C. : Choose this option if the alarm input device is normally
opened. The device closes the circuit to input an alarm, triggers
the NVR to close the alarm circuit and report an alarm.
150
UNIGUARD 4 & 8 HDD Series
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