Most security systems either beep or announce when a door or window is open and closed, this piston speaks just like that, giving you clear information. It also uses a virtual switch/motion device type that disables the announcements (if they get annoying, bother guests, etc).
I use the LANnouncer device type for a speaker, which connects to my Amazon Fire Tablet running the LANnouncer client (it is also the “command center” running ActionTiles!)