Scientific, nautical, surveying, electric, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), lifesaving and teaching apparatus and instruments; apparatus for recording, transmission and reproduction of sound or images; magnetic data-carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus; electronic transformers (combinational circuit parts) for low-voltage halogen lamps; brightness control apparatus (in particular dimmer switches); electronic switches and key buttons for controlling lighting devices; time-switch apparatus for controlling electric apparatus, lighting devices, blinds and roller blinds; automatic current controllers for low voltage cable and rod systems; overvoltage protection apparatus; sensors for detecting movement, noise, brightness, gases, temperature or other physical values for house and building technology applications; passive infrared motion detectors for lighting control or area monitoring purposes; ultrasound motion detectors for lighting control or area monitoring purposes; electronic components/apparatus with wireless infrared remote light control functions for lighting control purposes; electric and electronic apparatus, connected in a building via an installation bus system, for transmitting commands to control, checking (supervision), measuring, monitoring and recording equipment/apparatus; parts for the aforesaid apparatus and equipment, with exception of apparatus for recording, transmission and reproduction of sound or images; magnetic data-carriers, recording discs