Hi Guy’s,
I own a Honeywell Galaxy which is a similar system. I have a basic integration between the alarm and Homey whereby I retrieve status (armed A/B, full alarm etc.) with the use of binary sensors. I do not use Homey for arm/disarm purposes for security reasons.
I have a really cool flow with the use of a Fibaro smartplug whereby I utilize the led ring of the smart plug to show status (red for armed, green for disarm) in the upstairs hallway. Especially usefull for our oldest daughter (5) so she knows when it is okay to go downstairs in the morning w/o triggering the alarm.
I have also integrated binary sensors in some PIR’s, so I can use the motion sensor to turn on some lights. On an alarm event Homey turns on all the lights in the entire house and garden, and gives a push notification on my iPhone.
Cheers