North American Industry Classification System (NAICS)

561621

Security Systems Services (except Locksmiths)

Standard Industrial Classification (SIC)

7371

Computer Programming Services

7373

Computer Integrated Systems Design

7379

Computer Related Services, NEC

7382

Security Systems Services

8231

Libraries

8711

Engineering Services

8731

Commercial Physical and Biological Research

8742

Management Consulting Services

8748

Business Consulting, NEC

8999

Services, NEC

Product Service Codes (PSC)

J063

Maint-Rep of Alarm & Signal Systems

L063

Tech Rep Svcs/Alarm & Signal Systems

N063

Install of Alarm & Signal Systems

Federal Supply Classification (FSC)

6350

Miscellaneous Alarm, Signal, and Security Detection Systems