NAICS 561621Security Systems Services (Except Locksmiths)
Size Standard
$29 million
CMMC Level
Level 1–2 (varies by contract)
Key Agencies
DoD, Army, Navy, Air Force
Overview
Establishments primarily engaged in selling, installing, monitoring, or servicing security alarm systems and devices such as burglar and fire alarms, locking devices, and access control systems. Defense applications include SCIF build-outs, intrusion detection systems, and physical security upgrades.
Common Contract Types
Contracting Agencies
Frequently Asked Questions
What CMMC level is required for NAICS 561621?
Level 1 for standard alarm installations. Level 2 when contracts involve SCIF security system design, classified space configurations, or access control databases that contain CUI.
What is the SBA size standard for NAICS 561621?
The size standard is $29 million in average annual receipts.
What SCIF-related work uses NAICS 561621?
Work includes SCIF intrusion detection system (IDS) installation, TEMPEST shielding verification, access control system programming, video surveillance installation, and Integration of physical security systems into government networks.
Related NAICS Codes
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