Description
Other Quality Control, Testing and Inspection Services: Alarm, Signal, and Security Detection Systems

Possible NAICS Codes
561621 – Security Systems Services (except Locksmiths)
561990 – All Other Support Services
334290 – Other Communications Equipment Manufacturing
921190 – Other General Government Support
238210 – Electrical Contractors and Other Wiring Installation Contractors
922160 – Fire Protection
334519 – Other Measuring and Controlling Device Manufacturing
541350 – Building Inspection Services
523910 – Miscellaneous Intermediation
238220 – Plumbing, Heating, and Air-Conditioning Contractors