Security Camera King DVR-CVI8240M User Manual page 49

Please refer to the following sheet for detailed information.
SN Icon
1
2
3
4 AUDIO IN
5 VIDEO IN
6 AUDIO OUT
7 VIDEO OUT
8 1～16
NO1～NO6
Figure 2-7
Name Function
GND Ground port
Power input port Power socket.
Power switch Power on/off button.
Audio input port Connect to microphone and etc to
input signal.
Video input port Connect to analog camera, video
input signal.
Audio output port Connect to sound box and etc to
output audio signal.
Video output port Connect to output devices such as
TV.
Alarm input port 
1～16

Alarm output port 
There are four groups. The first
group is from port 1 to port 4,
the second group is from port 5
to port 8, the third group is from
9 to 12, and the fourth group is
from 13 to 16. They are to
receive the signal from the
external alarm source. There
are two types; NO (normal
open)/NC (normal close).
When your alarm input device
is using external power, please
make sure the device and the
NVR have the same ground.
5 groups of alarm output
ports. (Group 1：port NO1～
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