27 00 00 Communications 25 00 00 Integrated Automation 27 51 00 Distributed Audio-Video Communications Systems 01 10 00 Summary 50 51 00 Business Services

27 40 00 Audio-Video Communications 26 24 00 Switchboards and Panelboards 28 00 00 Electronic Safety and Security 10 40 00 Safety Specialties 41 00 00 Material Processing and Handling Equipment 33 71 00 Electrical Utility Transmission and Distribution 25 58 00 Integrated Automation Control of Electronic Safety and Security Systems 28 23 00 Video Surveillance 26 10 00 Medium-Voltage Electrical Distribution 10 17 00 Telephone Specialties 27 10 00 Structured Cabling 25 13 00 Integrated Automation Control and Monitoring Network 28 01 00 Operation and Maintenance of Electronic Safety and Security 28 08 00 Commissioning of Electronic Safety and Security 27 21 00 Data Communications Network Equipment 27 51 00 Distributed Audio-Video Communications Systems 33 83 00 Wireless Communications Distribution 40 01 00 Operation and Maintenance of Process Integration 41 01 00 Operation and Maintenance of Material Processing and Handling Equipment 41 08 00 Commissioning of Material Processing and Handling Equipment