- 13850 - Detection and Alarm
- 16440 - Switchboards, Panelboards, and Control Cen
- 16470 - Power Distribution Units
- 16490 - Components and Accessories
- 16500 - Lighting
- 16510 - Interior Luminaires
- 16520 - Exterior Luminaires
- 16530 - Emergency Lighting
- 16540 - Classified Location Lighting
- 16560 - Signal Lighting
- 16580 - Lighting Accessories
- 26 24 00 - Switchboards and Panelboards
- 26 26 00 - Power Distribution Units
- 26 27 00 - Low-Voltage Distribution Equipment
- 26 50 00 - LIGHTING
- 26 51 00 - Interior Lighting
- 26 52 00 - Emergency Lighting
- 26 54 00 - Classified Location Lighting
- 26 55 33 - Hazard Warning Lighting
- 26 55 36 - Obstruction Lighting
- 26 56 00 - Exterior Lighting
- 26 56 16 - Parking Lighting
- 26 56 19 - Roadway Lighting
- 26 56 23 - Area Lighting
- 26 56 29 - Site Lighting
- 26 56 33 - Walkway Lighting
- 26 56 36 - Flood Lighting
- 26 56 68 - Exterior Athletic Lighting
- 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
- 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