9 Photographic, cinematographic, audio-visual, optical, measuring and signalling apparatus and?instruments; apparatus and instruments for regulating or controlling the distribution or use of electricity; apparatus and instruments for recording, transmitting, receiving, reproducing, scaling, amplifying, splitting or processing sound, images or data; audio-visual, signal and signal mixing switches; audiovisual and electric interfaces; electric, coaxial and fibre optic cables; signalling and control panels; remote control apparatus; cameras; voltage surge protectors