Ключевые слова: active, ascent, automation, building, button, buttons, commercial, communication, control, descent, design, efficiency, electrical, electricalengineering, elevator, engineering, equipment, feature, functionality, illumination, indicators, innovation, installation, interface, lift, machinery, maintenance, metal, modern, movement, navigation, operation, panel, residential, safety, signal, structure, system, tactile, technology, transport, urban, user, userfriendly, userinterface, vertical,