NAICS Code 561621 - Security Systems Services (except Locksmiths)
NAICS Code 561621 Description
This U.S. industry comprises establishments primarily engaged in (1) selling security alarm systems, such as burglar and fire alarms, along with installation, repair, or monitoring services or (2) remote monitoring of electronic security alarm systems.
More Details
NAICS Code 561621 - Security Systems Services (except Locksmiths) is a final level code of the “Administrative and Support and Waste Management and Remediation Services” Sector. There are 4,971 companies verified as active in this industry in the USA with an estimated employment of 132,281 people.
Industry Sector
Administrative and Support and Waste Management and Remediation ServicesTotal Companies
7,083Verified Companies
4,971Est. Employment
132,281Annual Payroll
$6,538,557,000Total Revenue
$22,665,637,000SBA Size Standard
Annual Revenue Limit of $22,000,000Use Data For:
- Direct Mailing
- Emailing
- Calling
- Research
Includes Free Sample & Industry Report
100% Phone-Verified, NCOA Processed, Accurate Data
Hierarchy Navigation for NAICS Code 561621
Parent Category (less specific)
Extended NAICS Codes (8-digit) for Security Systems Services (except Locksmiths)
In-depth Industry Analysis: Explore Comprehensive Details on NAICS Code Extended Pages
- 561621-01 - Access Panels
- 561621-02 - Bank Protective Equipment
- 561621-03 - Burglar Alarm Systems-Monitoring
- 561621-04 - Security Systems
- 561621-05 - Card Key Systems
- 561621-07 - Fire Alarm Systems & Equipment-Testing
- 561621-08 - Remote Sensing Analysis
- 561621-09 - Security Systs-Communications/Computer
- 561621-10 - Sensors
- 561621-11 - Sprinkler Supervisory Service
- 561621-12 - Video Equipment-Security & Ind Systems
- 561621-13 - Warning Systems
- 561621-14 - Watchmen's Equipment & Systems
- 561621-15 - Lock Boxes
- 561621-16 - House Arrest Service
- 561621-17 - Installation/Monitoring-Security Systems
- 561621-18 - Offender Monitoring Services
- 561621-19 - Alcohol Monitoring
- 561621-20 - Personal Monitoring Service
Industry Examples of NAICS 561621
Common types of examples within NAICS Code 561621 - Security Systems Services (except Locksmiths) are:
- Alarm system monitoring services
- Alarm systems sales combined with installation, repair, or monitoring services
- Burglar alarm monitoring services
- Burglar alarm sales combined with installation, repair, or monitoring services
- Fire alarm monitoring services
- Fire alarm sales combined with installation, repair, or monitoring services
- Security alarm systems sales combined with installation, repair, or monitoring services
- Security system monitoring services
Industry Image
Example photo for industry NAICS 561621 - Security Systems Services (except Locksmiths) . This image represents an activity or product found in this industry.

Cross-References
- Selling security alarm systems for buildings, without installation, repair, or monitoring services: classified in NAICS Code - 42 - Wholesale Trade or Sector 44-45, Retail Trade.
- Retailing motor vehicle security systems with or without installation or repair services: classified in NAICS Code - 441310 - Automotive Parts and Accessories Stores..
Companies
SICCODE.com compiles comprehensive business data and executive contact leads for businesses within NAICS Code 561621 - Security Systems Services (except Locksmiths) . Some of the leading and most notable companies are listed below. To order a list of companies within NAICS Code 561621 - Security Systems Services (except Locksmiths) for marketing (postal mailing, telemarketing, emailing) or analytics-use, click on the link below to “Buy Business List”. Our data analysts are standing by to assist in your list setup and target marketing.
Industry Executives
Would you like to email executives in NAICS Code 561621 - Security Systems Services (except Locksmiths) ? Below are some of the common job titles available to be targeted.
- Business Development
- Chairman
- C-Level
- Director
- Engineering
- Executive Director
- Facilities
- Finance
- Human Resource
- IT
- Manager
- Marketing
- Manufacturing
- Operations
- Owner
- Partner
- President
- Principal
- Purchasing
- Sales
- Vice President
For specific job title targeting, please provide details in the business list request form.
Questions & Answers
-
What is the SBA NAICS 561621 revenue limit?
Businesses with an annual revenue under $22,000,000 are considered small businesses by SBA.
-
How many active businesses operate in NAICS Code 561621?
There are 4,971 verified business locations operating primarily in this industry.
-
What was the total revenue for NAICS Code 561621?
In 2017 the total revenue for Security Systems Services (except Locksmiths) was $22,665,637,000
-
What was the annual payroll for NAICS Code 561621?
In 2017 the annual payroll for Security Systems Services (except Locksmiths) was $6,538,557,000
-
How many people work in NAICS Code 561621?
The number of reported paid employees is 132,281.