Information technology and audio-visual, multimedia devices; communications equipment; computer networking and data communications equipment; point-to-point communications equipment; mounting devices for communications hardware; antennas and aerials as communication apparatus; telephones; paging equipment and apparatus; intercom apparatus; audio devices and radio receivers; speakers; loud speakers; horns; Communications headsets for use with communication radios, intercom systems, or other communications network transceivers; data processing equipment and accessories; computer hardware; computer component parts; communications computer application software; networking computer application software; content management software; drivers; couplers; electric and electronic components; electrical circuits and circuit boards; electronic interfaces; signal cables for telecommunication; electric cables and wires; safety, security, protection and signalling devices; alarms and warning equipment; signalling apparatus; battery packs

Computer hardware and telecommunication apparatus installation, maintenance and repair; alarm maintenance and repair