13700 – Security Access and Surveillance

13800 – Building Automation and Control

13850 – Detection and Alarm

16710 – Communications Circuits

16720 – Telephone and Intercommunication Equipment

16740 – Communication and Data Processing Equipment

16800 – Sound and Video

16810 – Sound and Video Circuits

16850 – Television Equipment

16880 – Multimedia Equipment

17200 – Data & LAN’s

17300 – Voice Systems

17400 – Video/Audio Systems

17410 – Control and Headend Equipment

17430 – Monitors, VCR?s & Projection Equipment

17440 – Audio Equipment

17730 – Intercom and Nurse Call

17850 – Door Controls

17860 – Detection & Alarm

17900 – Security Access and Surveillance

17910 – Security

17920 – Card Access

17930 – Surveillance Systems