Hello Albert!
Notifications in HomeKit are only sent to the iOS device, that "owns" the accessory or is a guest to the owner. So yes, would be possible in theory but the security service would need an iOS device or a Mac.
And it may be a challenge to get them all connected.
This is not a topic for the blog, you may want to contact me direct at [email protected]
Best regards, Volker
Oct 30, 2020