Baenzli607 years ago-101What do you do when the display stops working? I have four of these and the display doesn't work on any of them.Show in original language (German)kellernet7 years ago000 Helpful answerChange battery? (only lasts approx. 1 year)Show in original language (German)CommentAnonymous7 years ago000If the display does not work on 4, I have the feeling that the fault lies somewhere in the application. If necessary, contact the manufacturerShow in original language (German)Comment