28 00 00 Electronic Safety and Security 28 10 00 Electronic Access Control and Intrusion Detection 27 00 00 Communications 27 51 10 Sound Systems 28 10 10 Security & Intrusion Systems, CCTV
CSI Codes : 27 00 00 Communications, 27 51 00 Distributed Audio-Video Communications Systems, 28 00 00 Electronic Safety and Security, 28 10 00 Electronic Access Control and Intrusion Detection
Trade Names : Exacq Technologies, Genetec, Milestone, Bosch