Notes
This class includes only complete fire control systems. Anything less than a complete system, such as individual end items, assemblies, parts, attachments, or accessories for use in fire control systems are classified in classes other than this class.

Possible NAICS Codes
541990 – All Other Professional, Scientific, and Technical Services
922160 – Fire Protection
561621 – Security Systems Services (except Locksmiths)
334511 – Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
561210 – Facilities Support Services
334290 – Other Communications Equipment Manufacturing
238210 – Electrical Contractors and Other Wiring Installation Contractors
541330 – Engineering Services
115310 – Support Activities for Forestry
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing