Dahua NVR21-S2 SERIES, Руководство пользователя

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Figure 2-67
Listening Operation
At the device end, speak via the speaker or the pickup, and then you can get the audio from the earphone
or sound box at the pc-end. See Figure 2-68.
Figure 2-68
2.4.2
PC-end to the device-end
Device Connection
Connect the speaker or the pickup to the audio output port in the PC and then connect the earphone or
the sound box to the first audio input port in the device rear panel.
Login the Web and then enable the corresponding channel real-time monitor.
Please refer to the above interface (Figure 2-67) to enable bidirectional talk.
Listening Operation
At the PC-end, speak via the speaker or the pickup, and then you can get the audio from the earphone or
sound box at the device-end. See Figure 2-69.
Figure 2-69
2.5 Mouse Operation
Please refer to the following sheet for mouse operation instruction.
Left click
mouse
When you have selected one menu item, left click mouse to view menu content.
Modify checkbox or motion detection status.
Click combo box to pop up dropdown list