If you haven’t already bought the siren and panic button, you could get both of these features using the Aeon Labs Aeotec Doorbell which sells for about $50. The device can play up to 100 mp3 files so if you later get door sensors you could play messages like, “the front door has been opened”.
Either way, the custom device handlers below should make things easier for you:
Aeon Labs Multifunction Siren Device Handler
Aeon Labs Multifunction Doorbell Device Handler