The following Product Service Codes (PSCs) are commonly associated with NAICS 561621, Security Systems Services (except Locksmiths)

PSC N063 Installation of Equipment—Alarm, Signal, and Security Detection Systems


PSC J042 Maint/Repair/Rebuild of Equip- Fire Fighting/Rescue/Safety Equip; Environ Protect Equip/Matls


PSC H363 Inspection—Alarm, Signal, and Security Detection Systems


PSC DE01 IT and Telecom—End User: Help Desk; Tier1-2, Workspace, Print, Productivity Tools (Labor)

Federal Category 1.5: Information Technology and Telecommunications End User

Support services for end user client computing including Tier 1 and 2 help/service desk, deskside support, adds/moves/changes, workspace technical support, audio/video (A/V, VTC) conferencing, and printer support. A/V and VTC includes support services typically used in conference rooms and dedicated telepresence rooms to enable workforce communications. Printer support includes Managed Print Services (MPS) for multifunction printers (print, scan, fax, copy).

Mobile device support.

Possible NAICS Codes
811210 – Electronic and Precision Equipment Repair and Maintenance
541519 – Other Computer Related Services
561210 – Facilities Support Services
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
541330 – Engineering Services
334111 – Electronic Computer Manufacturing
513210 – Software Publishers
238290 – Other Building Equipment Contractors
334511 – Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
541512 – Computer Systems Design Services