Aerials; Theft alarms; Anti-intrusion alarms; Personal security alarms; Amplifiers; Antennas; Cabinets for loudspeakers; Camcorders; Cinematographic cameras; Computer-readable magnetic card in which data is/are magnetically recorded; Audio cassette players; Compact disc players; Recorded computer operating programs for use in database management, for use as spreadsheets, and for word processing in the field of controls for audio and video; Computer software for use in database management, for use as spreadsheets, and for word processing in the field of controls for audio and video; Electronic and optical communications instruments and components, namely optical data links; Acoustic conduits; Electro-dynamic signal processors operated via remote control; Headphones; Horns for loudspeakers; Loudspeakers; Megaphones; Electric access control and alarm monitoring systems; Personal stereos; Radios; Vehicle radios; Radio telegraphy transmitters; Radio telephones; Audio and video receivers; Telephone receivers; Remote controls for public address systems and closed circuit television systems; Electronic signal transmitters for radios and telephones; Digital audio tape recorders; Digital video recorders; Audio and video tape recorders; Telephones; Telephone transmitters; Telecommunication radio and telephone transmitters; Public address systems comprised of microphones, amplifiers and loudspeakers; Televisions; Cameras for video monitors; and Closed circuit television systems comprised of cameras and video television monitors which are used for security purposes