28 3100 - Fire Detection and Alarm
- Advanced Fire Systems
- AES-IntelliNet
- AirSense Technology
- Alison Control
- Bosch Security Systems
- Commercial Products Group / CPG Life Safety Signals - CPG offers high quality audible and visual signals for a of variety life safety applications.
- Detector Electronics
- Digital Monitoring Products
- Fenwal Protection Systems
- Fike Corporation
- Fire-Lite Alarms
- Firecom
- First Alert Professional
- Gamewell - FCI - includes Fire Control Instruments
- GE Security
- Gentex Corporation
- Harrington Signal
- Hochiki America Corporation
- Invensys Climate Controls Americas - Includes Firex, Robertshaw, Ranco, Paragon, Invensys, Com-Trol, DuraDrive, Erie, I/A Series and Enerstat.
- H.R. Kirkland Company
- Micropack
- Mircom Technologies
- National Time & Signal has been manufacturing quality fire alarm systems in the USA since 1916.
- Notifier
- Potter Electric Signal Company
- The Protectowire Company
- Safe Fire Detection
- Safety Technology International - Protective covers, cages, buttons, alarms help prevent theft/vandalism to a wide range of devices.
- Siemens Building Technologies
- Signal Communications Corporation
- Silent Knight
- Simplex Grinnell
- Spectronics Corporation
- Xtralis - VESDA, the global leader and manufacturer of very early air sampling smoke detection system.