Dahua Technology DH-IPC-PFW83242-A180-S2, Быстрый старт

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Quick Start Guide
2
For more information about I/O port, see Table 1-2.
Table 1-2 Alarm information
Port Port Name Function
Alarm I/O
ALARM_OUT
Outputs alarm signal to alarm device.
When connecting to alarm device, only the ALARM_OUT port and
ALARM_OUT_GND port with the same number can be used together.
ALARM_OUT_G
ND
ALARM_IN1
Receives the switch signal of external alarm source.
Connect different alarm input devices to the same ALARM_IN_GND port.
ALARM_IN2
ALARM_IN_GN
D
Connecting Alarm Input/output
Alarm input/output is available on select models.
Connect alarm input device to the alarm input end of the I/O port.
Device collects different states of alarm input port when the input signal is idling and being
grounded.

Device collects logic "1" when input signal is connecting to +3 V to +5 V or idling.

Device collects logic "0" when input signal is grounded.
Alarm input
Connect alarm output device to the alarm output end of the I/O port. The alarm output is
relay switch output, which can only connect to NO alarm devices.
The ALARM_OUT port and the ALARM_OUT_GND port with the same number constitute a
switch for alarm output, see Figure 1-3. The switch is open normally and closes when there is
alarm output.