Siedle Classic is a contemporary interpretation of the classic door station. Its shape is characterised by geometric structures based on a grid layout. By focusing on a few, rigidly applied principles, the system acquires tremendous openness in its appearance. This leads to almost limitless combinations of shape, function and material. Contemporary door communication consists of more than doorbell and intercom, but also requires information, sight, surveillance, access control, switches and, of course, mail delivery.