Amcrest NV2104 - Page 13

13
Figure 2-6
Icon
Function
1, 2
ALARM1, ALARM2. The alarm becomes activated in the low level.
NO C
NO activation output. (On-off button).
＋12V
Rated current output. Current is 500mA.
Ground
Note
Different models support different alarm input ports. Please refer to the specifications sheet for detailed
information.
Slight differences may be found on the alarm port layout.
Alarm input port
Connect the positive end (+) of the alarm input device to the alarm input port (ALARM IN 1~2) of the NVR.
Note
When connecting the ground port of the alarm device to the NVR, you can use any of the GND ports
( ).
When there is peripheral power supplying the alarm device, ensure it is grounded on the NVR.
Alarm input and output port
There is peripheral power supplying to the external alarm device.