
Digital Video Recorder User Manual
13
Alarm output:
The DVR has 4-channel relay alarm output, which just give on/off signal to external alarm. The status of these pin are
illustrated as Fig. 2.7.
NO
..
COM
NC
..
NO
..
COM
NC
..
Beforealarm
Afteralarm
Fig 2.8 Relay Output Status
Users need connect their alarm according to the NO or NC type of the alarm. One connection example as Fig 2.8
Fig 2.9 Alarm Output Connection
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