linear2North American Industry Classification System (NAICS) Codes

SigNet’s primary NAICS code is 561621 – Security Systems Services (Except Locksmiths). However, below is a list of our other current NAICS Codes:

  • 238210 Electrical Contractors and Other Wiring Installation Contractors
  • 238290 Other Building Equipment Contractors
  • 238990 All Other Specialty Trade Contractors
  • 332618 Other Fabricated Wire Product Manufacturing
  • 334220 Radio and Television Broadcasting And Wireless Communications Equipment Manufacturing
  • 334290 Other Communications Equipment Manufacturing
  • 334511 Search, Detection, Navigation, Guidance, Aeronautical, And Nautical System And Instrument Manufacturing
  • 334512 Automatic Environmental Control Manufacturing For Residential, Commercial, And Appliance Use
  • 334519 Other Measuring and Controlling Device Manufacturing
  • 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers
  • 517110 Wired Telecommunications Carriers
  • 518210 Data Processing, Hosting, And Related Services
  • 541330 Engineering Services
  • 541511 Custom Computer Programming Services
  • 541512 Computer Systems Design Services
  • 541513 Computer Facilities Management Services
  • 541519 Other Computer Related Services
  • 541611 Administrative Management And General Management Consulting Services
  • 541690 Other Scientific and Technical Consulting Services
  • 541712 Research and Development In The Physical, Engineering, And Life Sciences (Except Biotechnology)
  • 541990 All Other Professional, Scientific, And Technical Services
  • 561210 Facilities Support Services
  • 561611 Investigation Services