NAICS Codes · NAICS 561621
NAICS 561621
Security Systems Services (except Locksmiths)
Electronic security system requirements
Identify the alarm systems, installation sites, monitoring coverage, and maintenance responsibilities. This classification concerns security-system services; distinguish these requirements from a cybersecurity or software-only engagement.
Classification reference
The U.S. Census Bureau 2022 NAICS reference for 561621 (opens in a new tab) provides the industry definition and cross-references. Use the solicitation’s stated classification and requirements when evaluating an opportunity.