Dahua TPC-BF2221-T Quick Start Manual page 14

SN Port Port Name
ALARM_NO
Alarm output
ALARM_COM
4
ALARM_IN1
Alarm input
ALARM_IN2
ALARM_GND ALARM_GND
Power input
5 POWER
port
6 RS-485 RS-485
Video output
7 VIDEO OUT
port
Connector Function Description
Alarm output ports, output alarm signal
to alarm device.
Various
alarm
Use ALARM_NO port together with
devices,
ALARM_COM port.
such as
smoke
Alarm input ports, receive the on-off
detector
signal of external alarm source.
and siren
Grounded terminal.
Input 12V DC.
—
Actual use shall be in accordance with
device label instruction. Otherwise, it
may cause damage to the device.
RS-485 port, control external PTZ and
—
so on.
Generally it outputs analog video
BNC signal, it can connect to TV monitor to
check image.
Design 3