WansView NCH 537MW - Manual (Page 13)

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3.2.2. Audio parameters
Figure 11
Audio input can select MIC or line in. The camera supports G.711 and G.726 audio encoding format.
The sound of the G.711 is better, but it occupies more bandwidth. If you click “On” of the audio capture,
so it will transmit audio in corresponding video stream. You must open the audio here, otherwise you
can‟t hear the audio when clicking audio play button in figure 9.
3.2.3. Image parameters
Figure 12
The image parameters may have some difference for H series cameras, for example:

Only camera with CMOS sensor features “flip, mirror”;

Only indoor PTZ cameras feature IR LED control;

In this page, some cameras have “night vision mode” button, select night vision mode can add
night vision brightness;