I am not too bright with anything a bit technical and all the doors I have come across, just turn the key and it is locked. I now have a new door, a 5 level deadlock door !!! If you lift up the handle everything locks, down with the handle and it unlocks, turn the key when up and the key won't turn. Open the door, lift up the handle and the key turns - my magic door locks when it is open !!
Can anyone help
Carole