[Mark Gleeson]

I'd be starting to worry about the safety implications of this

The question is, is the door mechanically locked (i.e the emergency override won't work) or simply electrically locked out where the emergency override will release the door

The manual lock is strictly speaking designed to lock a door which is unserviceable i.e. one which may not lock correctly.

Edit, I'm told if the mechanical lock is used the door cannot be opened using the emergency handle