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28 Electronic Safety and Security
28.01.00 Operation and Maintenance of Electronic Safety and Security
28.01.10 Operation and Maintenance of Access Control 28.01.10.51 Maintenance and Administration of Access Control 28.01.10.71 Revisions and Upgrades of Access Control 28.01.20 Operation and Maintenance of Video Surveillance 28.01.20.51 Maintenance and Administration of Video Surveillance 28.01.20.71 Revisions and Upgrades of Video Surveillance 28.01.30 Operation and Maintenance of Security Detection, Alarm, and Monitoring 28.01.30.51 Maintenance and Administration of Security Detection, Alarm, and Monitoring 28.01.30.71 Revisions and Upgrades of Security Detection, Alarm, and Monitoring 28.01.50 Operation and Maintenance of Specialized Systems 28.01.50.51 Maintenance and Administration of Specialized Systems 28.01.50.71 Revisions and Upgrades of Specialized Systems 28.01.60 Operation and Maintenance of Mass Notification 28.01.60.51 Maintenance and Administration of Mass Notification 28.01.60.71 Revisions and Upgrades of Mass Notification 28.01.70 Operation and Maintenance of Life Safety 28.01.70.51 Maintenance and Administration of Life Safety 28.01.70.71 Revisions and Upgrades of Life Safety 28.01.80 Operation and Maintenance of Fire Detection and Alarm 28.01.80.51 Maintenance and Administration of Fire Detection and Alarm 28.01.80.71 Revisions and Upgrades of Fire Detection and Alarm
