12
C
output alarm signal to
the alarm device.
NO: Normal open
alarm output end.
C: Alarm output
public end.
IN2
Alarm input port 2
Alarm input port. To
receive the signal from
the external alarm
device.
A
RS485 port
RS485_A port, control
external PTZ
B
RS485_B port, control
external PTZ
RX
RS232 port
RS232_RX
，
RS232
receive end.
TX
RS232_TX
，
RS232
COM send out end.
G
GND
RS232 ground end
NA
IR light port
External IR light signal
control port.
RESET
RESET button
Restore factory default
setup.
When system is
running normally,
press the RESET
button for at least 5
seconds, system can
restore factory default
setup.
ABF
Auto back focus
adjustment
-
Auto back focus
adjustment, by
adjusting Sensor
position to achieve
precise focus.
