Alarm Input Port - Dahua NVR100 series User Manual

Icon
1 1 6
～
NO1 C1 NO2 C2
， ，
C4
NO5 C5 NC5
CTRL 12V
1 2V
＋
A/B
Note
Different models support different alarm input ports. Please refer to the specifications sheet for
detailed information.
Slight difference may be found on the alarm port layout.

2.3.2 Alarm input port

Connect the positive end (+) of the alarm input device to the alarm input port (ALARM IN 1
NVR. Connect the negative end (-) of the alarm input device to the ground end (
Figure 2-46
Function
ALARM1
low level.
NO3 C3 NO4 Four NO activation output groups. (On-off button).
，
One NO/NC activation output group. (On-off button).
Control power output. Disable power output when alarm is
canceled. Current is 500mA.
Rated current output. Current is 500mA.
GND
485 communication port. They are used to control devices
such as PTZ. Please parallel connect 120TΩ between A/B
cables if there are too many PTZ decoders.
A LARM16. The alarm becomes activated in the
～
～ 1 6) of the
) of the NVR.
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