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ADVANCED OPERATION
ALARM
Alarm Inputs:
Alarm inputs are devices or switches that activate when a door, window, cabinet etc.
is opened or accessed. For example, you might want to only have the camera record
when someone opens a tool cabinet or when a door opens vs. recording when motion
occurs around those areas. There may be people moving by those areas frequently but
you are only concerned about when those areas are accessed. This saves hard drive
space and makes it easier to find an event that was recorded to the hard drive.
Select Alarm in Module
Alarm Input cables of device of Alarm in: one is connected with “COM” port, the other is
connected with the port “1/2/3/4” (This should be in accordance with Alarm Input ID 1/2/3/4 in
DVR software). The below figure shows the Alarm Input cable has been connected with Port 1,
so the Alarm Input 1 should be set in DVR software.
Alarm Output:
Alarm output is used to activate an external device such as a horn or light after an
alarm is triggered. To do this the DVR uses a dry contact normally open relay. To
configure alarm outputs, connect the external device to the out connections on
the alarm block as required by the device. The maximum contact rating is 24 VDC
@ 3A. Alarm input can start recording on any one of the camera channels.
COM
NO
NC
ALARM
COM
COM
OUT
3
4
2
1
From NO or NC depending on setup
selected to alarm inputs 1 through 4
Use COM from
alarm block
to Switch COM
Example Device:
Door Sensor
Note: Switch COM must be connected to COM in alarm block for device to operate properly
