angie.aprt2 years ago+110Can the lock still be opened with a key? If the battery is empty?Show in original language (German)dpremand2 years ago011 Helpful answerYes, of course! The device is installed inside your home and the cylinder remains the same. So you can open the door with a key from the outside and manually from the inside.Show in original language (French)CommentKiener2 years ago000Yes from the outside with a key, inside you can turn the round knob Show in original language (German)Comment
