8-Channel Digital Video Recorder

3. Alarm Connection

The DVR can support 8 alarm input and 1 alarm output.

Alarm input: There are two types of alarm input.
A: N.O. Normal open, close when triggered. DVR must set as N.O
B: N.C. Normal close open when triggeredDVR must set as N.C.
Please refer to the picture below, channel 2 to channel 8 are the same as channel 1.
Alarm output
There are three alarm output pin, the status of these pin are illustrated as below
NO
..
COM
NC
..
NO
..
COM
NC
..
Before alarm
After alarm
There is an example for alarm output connection
NO
..
COM
NC
..
A
larm
5V
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