Thermistors; Connectors for electronic circuits; Digital pH meters; Divers' masks; Electric door bells; Electronic testing equipment, namely, telecommunication line integrity testing apparatus; Endoscopy cameras for industrial purposes; Infrared detection apparatus; Lights for use on video cameras; Microscope illuminating devices; OLED (Organic light emitting diode) display panels; Phototelegraphy apparatus; Power switches; Projector lamps; Tyre-pressure measurers