Download User Manual - Conceptronic

Item
Interface
1
VIDEO IN
4ch video input
2
AUDIO IN
4ch audio input
3
V-OUT
1ch video output
4
A-OUT
1ch audio output
5
VGA
VGA
6
NETW ORK
RJ45
Descripció n
monitor
7
USB
8
ON/OFF
Power supply switcher
9
DC-12V
Power adaptor port
10
USB for back up and mouse control
RS-485：A , B
2.1.3 Alarm input port
The GND alarm detector connects to COM port under parallel connection (the power of alarm detector
supplied by external power supply)
The ground terminal of alarm detector joins up in parallel with DVR
The NC of alarm detector connects with the input end (alarm) of DVR;
When you want to reset a remote alarm (smoke detector for example), the +12V power supply of alarm detector is
supplied by the DVR.
When you select the external power supply, please share the GND with DVR;
Alarm input circuit: