8/16 Channel Digital Video Recorder
7
2. Open/Close output
A: N.O. Normal Open; closes when triggered. DVR must be set as low voltage alarm.
B: N.C. Normal Close; opens when triggered. DVR must set as high voltage alarm.
Please refer to the diagram below, channel 2 to channel 16 are similar to channel 1.
Alarm output
There are three alarm output pins, the status of these pins are illustrated below:
N O
.
.
COM
N C
.
.
N O
.
.
COM
N C
.
.
Before alarm
After alarm
