28 00 00 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