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3.3 Alarm Connections
The DVR can support up to 16-alarm inputs and 1 alarm output.
Alarm input: there are two types of alarm input.
1. Voltage output (5V and 0V)
A: If the sensor outputs high voltage (5V) normally and outputs low voltage when
triggered (0V), then users must set the DVR as low voltage alarm.
B: If the sensor outputs low voltage (0V) normally and outputs high voltage when
triggered (5V), then users must set the DVR as high voltage alarm.
Please refer to the picture below, channel 2 to channel 16 are the same as channel 1.
2. Open/Close output
A: N.O. Normal open, close when triggered. DVR must be set as low voltage alarm.
B: N.C. Normal close, open when triggered. DVR must be set as high voltage alarm.
Please refer to the picture below, channel 2 to channel 16 are the same as channel 1.
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