COP-USA DVRPRO04 - Manual (Page 117)

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Related settings as below:
Figure C-2:Sound Setling screen
Recording Property
1. Camera select only support 1C audio for the first one camera.
2. Selecting Audio device If select no recording, it will no sound when
playback.
3. uality select igh or Low . The better quality, the bigger file si e
is needed.
Playback Property
Click “Mute” for mute mode or adjust the “volume” slider for volume control.
Note: The volume is irrelative with the file’s capacity.
1. The real-time monitoring and playback screen with audio.
Click the audio icon to switch to mute mode.