People need to be able to adjust the volume of the siren on the base station

People need to be able to adjust the volume of the siren on the base station. Why is the volume stuck at such a high level?

That way people take notice if they hear it outside your home, or if a criminal happens to have broken in they just might get scared off.
I actually wish it was louder as I found out that when it goes off, I can’t hear it outside if no windows are open.