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

Possible NAICS Codes
561621 – Security Systems Services (except Locksmiths)
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
561210 – Facilities Support Services
541330 – Engineering Services
561622 – Locksmiths
922160 – Fire Protection
238210 – Electrical Contractors and Other Wiring Installation Contractors
238990 – All Other Specialty Trade Contractors
541380 – Testing Laboratories and Services
541512 – Computer Systems Design Services