#Buzzer function

The device has a buzzer for emitting acoustic signals so operation can be customised to the user's needs. 
This is especially useful for triggering an alarm event, for example, or for people with impairments, who receive an acoustic signal as confirmation after triggering an action.

* Alarm: if the device alarm function is activated, an acoustic signal is emitted when an alarm occurs.
* Confirmation of button press: A short or long button press causes an acoustic signal to be emitted.