Arm and disarm smart home monitor, play a notification over sonos

Take a look at Big Talker. ([(OBSOLETE See 1.1.10 or later) 1.1.8 10/11/16] Big Talker - Talk when events occur) I think it will do what you’re wanting to do. I’ve got mine setup to alert on all of my Sonos players when doors open or close. Cheers!