I couldn't find a FAQ on this and am confused on the various options.

If you buy the standard ALP system, does it still connect to a speaker for alerts?

if you buy the bluetooth add-on, and don't have a phone connected, does the system still function? Can alerts also go through a speaker in the car/ and does the standard controller still work).

If you buy the hifi system, you can't use the bluetooth module? (is that so?)

Thanks