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~C1,Group
2:port NO2~C2,Group 3:port
NO3~C3, Group 4:port NO4~
C4, Group 5: port NO5, C5,
NC5).Output alarm signal to
the alarm device. Please make
sure there is power to the
external alarm device.
NO: Normal open alarm output
C: Alarm output public end.
NC: Normal close alarm output
RS485_A port. It is the cable A. You
can connect to the control devices
such as speed dome PTZ.
RS485_B.It is the cable B. You can
connect to the control devices such
as speed dome PTZ.
Four-wire full-duplex
485 port
Four-wire full-duplex 485 port. T+,T-
is the output wire.
R+,R- is the input wire.
Controller 12V power output. It is to
control the on-off alarm relay
output.
+12V power output port. It can
provide the power to some
peripheral devices such as the
camera or the alarm device. Please
note the supplying power shall be
below 1A.