Scientific, research, navigation, surveying, photographic, cinematographic, audiovisual, optical, weighing, measuring, signalling, detecting, testing, inspecting, life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity; apparatus and instruments for recording, transmitting, reproducing or processing sound, images or data; software; electronic control instruments; apparatus and instruments for controlling electricity; sensors, in particular for fill level, quality, position, current and voltage measurement; commutators and components for triggering electric functions; sensors for measuring the fill level and the urea concentration of exhaust gas purification liquids; sensors for measuring the fill level, the temperature and the frost protection of cleaning fluids for discs and lenses for vehicles; sensors for measuring the fill level and the degree of purity of water for water injection systems; sensors for the position and condition monitoring of vehicles; sensors for measuring the dosage of water injections for combustion engines; sensors for wear and condition monitoring in vehicle brake systems; sensors for electricity, tension and temperature measurements of vehicle batteries; sensors for measuring the current charge level, the performance and the remaining life span of vehicle batteries; sensors for measuring wear of mechanical components and systems; touch sensitive control panels; sensor buttons for operating cooking hobs and household apparatus; air quality sensors; sensors for balance control, in particular in washing machines; switches for triggering electrical functions; proximity sensors for transmitting switching signals; button, turning and steering column switches.;