Graduate the audio level of TwoNav application and the volume of each audible element individually.
•Mute: Enable/Disable the general audio level of TwoNav application.
•Voice: Due the fact that this TwoNav device has no voice speaker, voice advices will be displayed as beeps.
•Alarm: Regulate the audio level for alarms and radar warnings.
•Clicks: Regulate the audio level for buttons pulses.