Back up camera sound?

[KId75]

I'm new to the Trail Boss vehicle, and so far liking it alot. My last truck was a 2017 F150 XLT. In the ford, when I backed up, as an object became closer in the camera, to the bumper, it would beep. In my 2020 Trail Boss, I have the indicator in the camera as to my distance from an object, but now sound? Is that normal, or do I not have a setting adjusted correctly?

Thanks

 

[GETGONE]

Park distance sensor was an optional package. Look on your bumper for the round sensors front and rear to determine if yours actually has it.