Audiovox LCM45NB - Manual (Page 5)

4
LCD MONITOR BRIGHTNESS CONTROL
The brightness adjustment control is on the bottom right of the monitor
(see Figure 1-C). Rotating the wheel to the right will decrease the
brightness.
Rotating the wheel to the left will increase the brightness.
SPEAKER VOLUME CONTROL
The speaker volume control is on the bottom left side of the monitor (see
Figure 1-B). This control is used only to adjust the rearview camera
audio level. The vehicle must be shifted into reverse in order to hear and
adjust the camera audio level.
Rotating the wheel to the right will decrease the speaker level.
Rotating the wheel to the left will increase the audio level.