Signalling, checking (supervision) and life-saving apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; measuring, detecting and monitoring instruments, indicators and controllers; sensors and detectors; apparatus for recording, transmission or reproduction of sound or images; information technology and audio-visual equipment; computers; computer hardware; computer hardware for telecommunications; central processing units [processors]; data processing equipment and apparatus; data processing systems; data processing terminals; data processing programs; software; computer software; data processing software; communication software; telecommunications software; communications processing computer software; network management computer software; security software; software for network and device security; computer software for the remote control of security apparatus; computer software for controlling the operation of audio and video devices; software for remote diagnostics; diagnostic apparatus, not for medical purposes; software for diagnostics and troubleshooting; utility programs for performing computer system diagnostics; graphical user interface software; communications equipment and apparatus; point-to-point communications equipment and apparatus; network communication apparatus; computer networking and data communications equipment; communications networks; electronic communication installations; wire communication apparatus; broadcasting equipment; sound transmitting apparatus; signal processors; digital signal processors; communication hubs; communication interface units; communications processors; communications servers [computer hardware]; antennas and aerials as communications apparatus; telephones; telecommunication apparatus, equipment and devices; electric telecommunications apparatus; telecommunications networks; telecommunications switchboards; digital telecommunications apparatus; electronic telecommunications apparatus; telephones incorporating intercommunication systems; transmitting apparatus; transmitting units; electronic units for transmitting audio signals; transmitters; telecommunications transmitters; transmitter receivers; transceivers; transponders; voice transmission apparatus; voice processing systems; voice response equipment; wireless communication devices for voice, data or image transmission; digital voice recorders; digital voice signal processors; public address installations; public address systems; public address speaker systems; speakers; audio speakers; speaker enclosures; audio speaker enclosures; loudspeakers; loudspeaker systems; loudspeaker installations; loudspeaker housings; loudspeaker units; loudspeakers with built in amplifiers; paging apparatus; paging equipment; radio paging equipment; microphones; microphones for communication devices; microphone plugs; fibre optics; optical fibres; fibre optic telecommunications apparatus; amplifiers; sound amplifiers; audio amplifiers; electric amplifiers for sound signals; signal amplifiers; intercoms; intercom apparatus; intercommunication apparatus; junction boxes; cables and wires; electric cables and wires; audio/visual devices; audio devices and radio receivers; safety, security, protection and signalling devices; signalling apparatus and instruments; remote monitoring apparatus; remote control apparatus; checking (supervision) apparatus and instruments; safety monitoring apparatus [electric]; alarms and warning equipment; alarms; security alarms; sound alarms; warning alarms [other than for vehicles]; remote alarms [other than anti-theft for vehicles]; alarm systems; security alarm systems [other than for vehicles]; alarm installations; alarm sensors; alarm signalling receivers; alarm signalling transmitters; alarm central units; keypads; keypads for security alarms; control panels for security alarms; security warning apparatus; security control apparatus; security apparatus for processing audio signals; wireless controllers to remotely monitor and control the function and status of security systems; signal adapting apparatus; signal transmission apparatus; signal transmitters; emergency signal transmitters; transmitters for use in emergency communications; sirens; beacon receivers, radio beacon machines and apparatus; indicator lights [for telecommunication apparatus]; beacon lamps; beacon lights [safety equipment]; luminous beacons; warning lamps and lights [beacons]; luminous safety beacons; radio beacon machines and apparatus; flashing safety lights; parts and fittings for all the aforesaid goods.

Installation, repair and maintenance of signalling, checking (supervision) and life-saving apparatus and instruments; installation, repair and maintenance of apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; installation, repair and maintenance of measuring, detecting and monitoring instruments, indicators and controllers; installation, repair and maintenance of sensors and detectors; installation, repair and maintenance of apparatus for recording, transmission or reproduction of sound or images; installation, repair and maintenance of information technology and audio-visual equipment; installation, repair and maintenance of computers; installation, repair and maintenance of computer hardware; installation, repair and maintenance of computer hardware for telecommunications; installation, repair and maintenance of central processing units [processors]; installation, repair and maintenance of data processing equipment and apparatus; installation, repair and maintenance of data processing systems; installation, repair and maintenance of data processing terminals; installation, repair and maintenance of data processing programs; installation, repair and maintenance of software; installation, repair and maintenance of computer software; installation, repair and maintenance of data processing software; installation, repair and maintenance of communication software; installation, repair and maintenance of telecommunications software; installation, repair and maintenance of communications processing computer software; installation, repair and maintenance of network management computer software; installation, repair and maintenance of security software; installation, repair and maintenance of software for network and device security; installation, repair and maintenance of computer software for the remote control of security apparatus; installation, repair and maintenance of computer software for controlling the operation of audio and video devices; installation, repair and maintenance of software for remote diagnostics; installation, repair and maintenance of diagnostic apparatus, not for medical purposes; installation, repair and maintenance of software for diagnostics and troubleshooting; installation, repair and maintenance of utility programs for performing computer system diagnostics; installation, repair and maintenance of graphical user interface software; installation, repair and maintenance of communications equipment and apparatus; installation, repair and maintenance of point-to-point communications equipment and apparatus; installation, repair and maintenance of network communication apparatus; installation, repair and maintenance of computer networking and data communications equipment; installation, repair and maintenance of communications networks; installation, repair and maintenance of electronic communication installations; installation, repair and maintenance of wire communication apparatus; installation, repair and maintenance of broadcasting equipment; installation, repair and maintenance of sound transmitting apparatus; installation, repair and maintenance of signal processors; installation, repair and maintenance of digital signal processors; installation, repair and maintenance of communication hubs; installation, repair and maintenance of communication interface units; installation, repair and maintenance of communications processors; installation, repair and maintenance of communications servers [computer hardware]; installation, repair and maintenance of antennas and aerials as communications apparatus; installation, repair and maintenance of telephones; installation, repair and maintenance of telecommunication apparatus, equipment and devices; installation, repair and maintenance of electric telecommunications apparatus; installation, repair and maintenance of telecommunications networks; installation, repair and maintenance of telecommunications switchboards; installation, repair and maintenance of digital telecommunications apparatus; installation, repair and maintenance of electronic telecommunications apparatus; installation, repair and maintenance of telephones incorporating intercommunication systems; installation, repair and maintenance of transmitting apparatus; installation, repair and maintenance of transmitting units; installation, repair and maintenance of electronic units for transmitting audio signals; installation, repair and maintenance of transmitters; installation, repair and maintenance of telecommunications transmitters; installation, repair and maintenance of transmitter receivers; installation, repair and maintenance of transceivers; installation, repair and maintenance of transponders; installation, repair and maintenance of voice transmission apparatus; installation, repair and maintenance of voice processing systems; installation, repair and maintenance of voice response equipment; installation, repair and maintenance of wireless communication devices for voice, data or image transmission; installation, repair and maintenance of digital voice recorders; installation, repair and maintenance of digital voice signal processors; installation, repair and maintenance of public address installations; installation, repair and maintenance of public address systems; installation, repair and maintenance of public address speaker systems; installation, repair and maintenance of speakers; installation, repair and maintenance of audio speakers; installation, repair and maintenance of speaker enclosures; installation, repair and maintenance of audio speaker enclosures; installation, repair and maintenance of loudspeakers; installation, repair and maintenance of loudspeaker systems; installation, repair and maintenance of loudspeaker installations; installation, repair and maintenance of loudspeaker housings; installation, repair and maintenance of loudspeaker units; installation, repair and maintenance of loudspeakers with built in amplifiers; installation, repair and maintenance of paging apparatus; installation, repair and maintenance of paging equipment; installation, repair and maintenance of radio paging equipment; installation, repair and maintenance of microphones; installation, repair and maintenance of microphones for communication devices; installation, repair and maintenance of microphone plugs; installation, repair and maintenance of fibre optics; installation, repair and maintenance of optical fibres; installation, repair and maintenance of fibre optic telecommunications apparatus; installation, repair and maintenance of amplifiers; installation, repair and maintenance of sound amplifiers; installation, repair and maintenance of audio amplifiers; installation, repair and maintenance of electric amplifiers for sound signals; installation, repair and maintenance of signal amplifiers; installation, repair and maintenance of intercoms; installation, repair and maintenance of intercom apparatus; installation, repair and maintenance of intercommunication apparatus; installation, repair and maintenance of junction boxes; installation, repair and maintenance of cables and wires; installation, repair and maintenance of electric cables and wires; installation, repair and maintenance of audio/visual devices; installation, repair and maintenance of audio devices and radio receivers; installation, repair and maintenance of safety, security, protection and signalling devices; installation, repair and maintenance of signalling apparatus and instruments; installation, repair and maintenance of remote monitoring apparatus; installation, repair and maintenance of remote control apparatus; installation, repair and maintenance of checking (supervision) apparatus and instruments; installation, repair and maintenance of safety monitoring apparatus [electric]; installation, repair and maintenance of alarms and warning equipment; installation, repair and maintenance of alarms; installation, repair and maintenance of security alarms; installation, repair and maintenance of sound alarms; installation, repair and maintenance of warning alarms [other than for vehicles]; installation, repair and maintenance of remote alarms [other than anti-theft for vehicles]; installation, repair and maintenance of alarm systems; installation, repair and maintenance of security alarm systems [other than for vehicles]; installation, repair and maintenance of alarm installations; installation, repair and maintenance of alarm sensors; installation, repair and maintenance of alarm signalling receivers; installation, repair and maintenance of alarm signalling transmitters; installation, repair and maintenance of alarm central units; installation, repair and maintenance of keypads; installation, repair and maintenance of keypads for security alarms; installation, repair and maintenance of control panels for security alarms; installation, repair and maintenance of security warning apparatus; installation, repair and maintenance of security control apparatus; installation, repair and maintenance of security apparatus for processing audio signals; installation, repair and maintenance of wireless controllers to remotely monitor and control the function and status of security systems; installation, repair and maintenance of signal adapting apparatus; installation, repair and maintenance of signal transmission apparatus; installation, repair and maintenance of signal transmitters; installation, repair and maintenance of emergency signal transmitters; installation, repair and maintenance of transmitters for use in emergency communications; installation, repair and maintenance of sirens; installation, repair and maintenance of beacon receivers, radio beacon machines and apparatus; installation, repair and maintenance of indicator lights [for telecommunication apparatus]; installation, repair and maintenance of beacon lamps; installation, repair and maintenance of beacon lights [safety equipment]; installation, repair and maintenance of luminous beacons; installation, repair and maintenance of warning lamps and lights [beacons]; installation, repair and maintenance of luminous safety beacons; installation, repair and maintenance of radio beacon machines and apparatus; installation, repair and maintenance of flashing safety lights; installation, repair and maintenance of parts and fittings for all the aforesaid goods.