Domoticz

I purchase the door sensor with the lock. You need to have the door sensor to be able to detect if the door is open or not.
Alternatively, you could check the lock status, if the lock status is open it means that the door is (being) opened. That should also work in my view.

Thanks again. Yeah older versions of the lock did come with a door sensor. Colleague of mine has that version too. But for the newer version they are sold seperately. OK, will see if I can get it from the lock or need the sensor!