A hearing device, e.g. a hearing aid, comprises first and second hearing device parts having separate first and second housings and being electrically connectable by a connecting element. The second hearing device part is available in a multitude of variants. The connecting element comprises an electric cable comprising a multitude of electric conductors, and a first electric connector comprising a multitude of first electric termination elements. The second hearing device part comprises a loudspeaker, and/or a number of sensors each providing an electric sensor signal representative of a current property of the environment of the hearing device and/or a current state of the user wearing the hearing device. The first hearing device part comprises a configuration extractor electrically connected to said second hearing device part via said connecting element and adapted to identify a current configuration of sensors in said second hearing device part.