Binoculars; Intercoms; Spyglasses; Baby monitors; Bar code printers; Cabinets for loudspeakers; Car video recorders; Digital cameras; Infrared detectors; Mini beam projectors; Passive infrared detectors; Radio-frequency transmitters; Remote video monitoring system consisting primarily of a camera and video monitor for recording and transmitting images to a remote location; Self-acting focussing projectors; Thermal printers; TV cameras; Video projectors