AIRPLAY - Select this to use the built in AirPlay wireless presentation device.
VOLUME - Use the volume dial to raise and lower the speaker volume.
SYSTEM OFF - Please ensure that you select the SYSTEM OFF button when finished with the podium.
DISPLAY MUTE - Use this button to stop displaying an image through the projector temporarily. This may have been left on by the person using the projector before you and would need to be pressed again to enable the display. It may take several seconds for the image to reappear after unmuting.
AUDIO MUTE - Use this button to mute the audio. This may have been left on by the person using the projector before you and would need to be pressed again to enable the audio.