My lock has an audible alarm after I input the PIN code. Blair April 10, 2019 20:45 Updated Please check if anything is blocking the bolt. If not, please contact Alfred at firstname.lastname@example.org for further assistance. Related articles Why is Alfred failing to lock? Why does my lock alarm after unlocking with the thumb turn? What should I do if my lock does not respond? The thumb turn does not work. Handing Switch Comments 0 comments Please sign in to leave a comment.