Dahua HD IR Vari-focal Bullet Network Camera Quick Start Guide
1.3 Bidirectional Talk
Note:
Some products do not support bidirectional talk, which cannot be applied to this chapter.
Step 1
Connect the speaker or the MIC to the audio input port of the device and PC; connect the
earphone to the audio output port of the device and PC respectively.
Step 2
Log in the device WEB interface, click “Talk” button to enable bidirectional talk. You can see the
button becomes orange after you enabled the audio talk function. Click “Talk” button again to
stop the bidirectional talk function.
Step 3
Input audio to speaker or MIC on the device end and PC respectively, and receive the audio via
earphone on the device end and PC.
1.4 Alarm Setup
Note:
It is only supported by some series products.
Figure 1-4
Alarm input, output description:
Step 1 Connect alarm input device to the alarm input of I/O cable.
Step 2 Connect alarm output device to the alarm output of I/O cable, alarm output is collector
open circuit output which connects 10K resistor to 3.3V externally.
Step 3 Open the Web, set alarm input and output correspondingly. Alarm input on WEB
corresponds to I/O cable on device. When there is alarm, alarm input device will
generate signal of high and low level. Set corresponding NO and NC inputs.
Step 4 Set the WEB alarm output. The alarm output is for the alarm output port of the device. It
is the alarm output port of the I/O cable.
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