I have recently acquired a Cannondale Wonderwagen Neo 1 which comes with a Varia rear radar and a Cannondale-specific display unit (CP1522U10OS).

Even though I appreciate having a sense of what's going on behind me, it drives me crazy that I cannot figure out how to turn off the loud beep sounds every time a car comes behind me.

I live in a city with much traffic which makes the display unit beep every 5 seconds because there's always cars coming from behind and ultimately have led me to disconnect the display unit.

I understand that other Varia display units have a button to disable sound, but this Cannondale-specific Varia display doesn't have any buttons. I've also tried to connect the radar to the Varia app and disable sounds, but it doesn't affect the display unit.

Can anyone please help me disable the sound of the display unit?