28 30 00 Electronic Detection and Alarm 28 20 00 Electronic Surveillance 28 13 00 Access Control 28 10 00 Electronic Access Control and Intrusion Detection / Surveillance 27 41 00 Audio-Video Systems 27 21 00 Data Communications Network Equipment 27 20 00 Data Communications 27 13 00 Communications Backbone Cabling 27 10 00 Structured Cabling 27 04 00 Audio-Video Systems

26 50 00 Lighting 26 56 00 Exterior Lighting 27 00 00 Communications 27 01 00 Operation and Maintenance of Communications 27 04 00 Audio-Video Systems 27 05 00 Common Work Results for Communications 27 21 00 Data Communications Network Equipment 27 41 00 Audio-Video Systems 28 13 00 Access Control

28 20 00 Electronic Surveillance 28 13 00 Access Control 28 10 00 Electronic Access Control and Intrusion Detection / Surveillance 28 00 00 Electronic Safety and Security 27 41 00 Audio-Video Systems 27 40 00 Audio-Video Communications 27 10 00 Structured Cabling 27 00 00 Communications 10 18 00 Informational Kiosks 10 11 00 Visual Display Units

08 70 00 Hardware 28 00 00 Electronic Safety and Security 28 01 00 Operation and Maint. of Electronic Safety and Security 28 10 00 Electronic Access Control and Intrusion Detection / Surveillance 28 13 00 Access Control 28 20 00 Electronic Surveillance 28 30 00 Electronic Detection and Alarm 28 40 00 Electronic Monitoring and Control

28 40 00 Electronic Monitoring and Control 28 30 00 Electronic Detection and Alarm 28 20 00 Electronic Surveillance 28 13 00 Access Control 28 10 00 Electronic Access Control and Intrusion Detection / Surveillance 28 01 00 Operation and Maint. of Electronic Safety and Security 28 00 00 Electronic Safety and Security

28 40 00 Electronic Monitoring and Control 28 30 00 Electronic Detection and Alarm 28 20 00 Electronic Surveillance 28 13 00 Access Control 28 10 00 Electronic Access Control and Intrusion Detection / Surveillance 28 00 00 Electronic Safety and Security 27 51 00 Distributed Audio-Video Communications Systems 27 41 16 Integrated Audio-Video Systems and Equipment 21 20 00 Fire-Extinguishing Systems 21 00 00 Fire Suppression