- 13700 - Security Access & Surveillance
- 13850 - Detection and Alarm
- 16240 - Battery Equipment
- 16500 - Lighting
- 16530 - Emergency Lighting
- 16540 - Classified Location Lighting
- 16560 - Signal Lighting
- 16580 - Lighting Accessories
- 16700 - Communications
- 16720 - Telephone and Intercommunication Equipment
- 16770 - Cable Transmission and Reception Equipment
- 16810 - Sound and Video Circuits
- 26 33 00 - Battery Equipment
- 26 33 13 - Batteries
- 26 33 16 - Battery Racks
- 26 33 19 - Battery Units
- 26 33 23 - Central Battery Equipment
- 26 50 00 - LIGHTING
- 26 52 00 - Emergency Lighting
- 26 54 00 - Classified Location Lighting
- 26 55 33 - Hazard Warning Lighting
- 26 55 36 - Obstruction Lighting
- 27 00 00 - COMMUNICATIONS
- 27 10 00 - STRUCTURED CABLING
- 27 30 00 - VOICE COMMUNICATIONS
- 27 50 00 - DISTRIBUTED COMMUNICATIONS AND MONITORING SYSTEMS
- 28 10 00 - ELECTRONIC ACCESS CONTROL AND INTRUSION DETECTION
- 28 13 00 - Access Control
- 28 13 53 - Security Access Detection
- 28 16 00 - Intrusion Detection
- 28 20 00 - ELECTRONIC SURVEILLANCE
- 28 23 00 - Video Surveillance
- 28 30 00 - ELECTRONIC DETECTION AND ALARM
- 28 31 00 - Fire Detection and Alarm
- 28 31 46 - Smoke Detection Sensors
- 28 33 00 - Fuel-Gas Detection and Alarm
- 28 34 00 - Fuel-Oil Detection and Alarm
- 28 35 00 - Refrigerant Detection and Alarm
- 33 82 00 - Communications Distribution
- 34 41 13 - Traffic Signals
- 34 42 13 - Railway Signals
- 34 43 13 - Airfield Signals
- 34 48 13 - Operating Bridge Signals
- 35 11 13 - Signaling Equipment for Waterways
- 35 12 13 - Marine Signaling Equipment
- 35 13 13 - Signaling Equipment for Dams