I have my iHost as a local server, also for alarm.
I switch the alarm type by the NSPanel switched (Home and Away)
and when alarming scenes will generate a buzzer switch and a notification.
Please think of a way of sending / sharing the saource of the alarm (which sensor).
Yes, I mean the triggers of alarming.
for example: In my boat I use the Away mode of the alarm with 5 sensors (3 water (3 zones), 1 door, 1 PIR).
But if the alarm goes, I only get (via scenes and notifications) the alarm is going, but you can imagine I need to make different decisions on different triggers.