I live in an apartment and the door phone is not smart. So I have attached an Aqara vibration sensor to the door phone as a trigger.
The vibration is not strong enough to trigger the alarm, so I use the vibration level.
It works great, but there is a 3-4 minute delay.
There is no delay on the alarm, if I activate it manually. What to do?
UPDATE: still no luck with Aqara. Bought a Fibaro Multi sensor (z-wave) and it does the trick just perfect.