Company lists · Data refreshed September 2026

Top 25 Access control system providers based in the United States

Name: Access control system providers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,209 companies tracked

RevenueBase identified 1,209 access control system providers headquartered in the United States as of September 2026 and tracks 21,906 professional contacts across them, including 6,819 with verified work emails. New York is the largest hub.

This list covers access control system providers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

1,209Companies

21,906Contacts tracked

6,819Verified emails

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The 25 largest access control system providers based in the United States

Ranked by team size

Top 25 of 1,209 access control system providers based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to access control system providers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Automated Systems Design, INC	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 19, 2026	n/a	2,678 contacts →
	Partial evidence “Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Source: RevenueBase Database · checked Sep 19, 2026
2	Security 101	Partial evidence	West Palm Beach, FL, United StatesHQ checked Sep 19, 2026	501-1,000	849 contacts →
	Partial evidence “Security 101® is a nationwide leader in designing, installing, and maintaining advanced security systems tailored to the unique needs of organizations of all sizes.” Source: RevenueBase Database · checked Sep 19, 2026
3	Assa Abloy Door Security Solutions - US	Indirect evidence	New Haven, CT, United StatesHQ checked Sep 19, 2026	5,001-10,000	736 contacts →
	Indirect evidence “Combining the expertise of the industry’s most knowledgeable door opening experts with a comprehensive product offering of leading door and hardware brands, the consultative…” Source: RevenueBase Database · checked Sep 19, 2026
4	Kastle Systems	Indirect evidence	Falls Church, VA, United StatesHQ checked Sep 19, 2026	501-1,000	686 contacts →
	Indirect evidence “Kastle is a leading provider of property technology solutions, protecting commercial real estate, multi-family residential, global enterprises, educational institutions and…” Source: RevenueBase Database · checked Sep 19, 2026
5	The Cook & Boardman Group, LLC	Indirect evidence	Winston-Salem, NC, United StatesHQ checked Sep 19, 2026	1,001-5,000	445 contacts →
	Indirect evidence “Established in 1955, The Cook & Boardman Group is the nation’s premier provider of architectural doors and frames, door hardware and related building specialty products in…” Source: RevenueBase Database · checked Sep 19, 2026
6	Napco Security Technologies	Indirect evidence	Amityville, NY, United StatesHQ checked Sep 19, 2026	501-1,000	427 contacts →
	Indirect evidence “NAPCO Security Technologies (NASDAQ: NSSC) is one of the world's leading manufacturers of technologically advanced electronic security equipment including intrusion and fire alarm…” Source: RevenueBase Database · checked Sep 19, 2026
7	Lenels2	Strong evidence	Pittsford, NY, United StatesHQ checked Sep 19, 2026	201-500	362 contacts →
	Strong evidence “LenelS2 is a global leader in advanced physical security solutions, including access control, video surveillance and mobile credentialing.” Source: RevenueBase Database · checked Sep 19, 2026
8	AFA Protective Systems, INC	Indirect evidence	Syosset, NY, United StatesHQ checked Sep 19, 2026	201-500	302 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
9	Wittenbach	Indirect evidence	Sparks, MD, United StatesHQ checked Sep 19, 2026	201-500	244 contacts →
	Indirect evidence “For over 50 years, Wittenbach has been a trusted leader in advanced security solutions in financial and commercial industries.” Source: RevenueBase Database · checked Sep 19, 2026
10	ONITY	Strong evidence	Salem, OR, United StatesHQ checked Sep 19, 2026	201-500	240 contacts →
	Strong evidence “Onity supports the hospitality, self-storage, commercial, education and military segments with a full spectrum of electronic locking, access control and mobile key solutions.” Source: RevenueBase Database · checked Sep 19, 2026
11	NAVCO	Partial evidence	Orange, CA, United StatesHQ checked Sep 19, 2026	51-200	232 contacts →
	Partial evidence “One of the largest privately held national electronic security system integrator in the USA, NAVCO keeps you one step ahead of ever-changing technology.” Source: RevenueBase Database · checked Sep 19, 2026
12	Alarm Detection Systems	Partial evidence	Aurora, IL, United StatesHQ checked Sep 19, 2026	201-500	225 contacts →
	Partial evidence “Family owned and operated since 1968, Alarm Detection Systems, Inc.(ADS) understands that nothing is more important than the safety of your family and the protection of your…” Source: RevenueBase Database · checked Sep 19, 2026
13	Aiphone	Strong evidence	Redmond, WA, United StatesHQ checked Sep 19, 2026	201-500	207 contacts →
	Strong evidence “Aiphone is your complete building access and communication solution, giving you secure and convenient control with even more flexibility.” Source: RevenueBase Database · checked Sep 19, 2026
14	Datawatch Systems	Strong evidence	Bethesda, MD, United StatesHQ checked Sep 19, 2026	201-500	206 contacts →
	Strong evidence “An industry leader in managed access control security solutions and services since 1981, Datawatch Systems is trusted by building owners, property managers, and tenants across the…” Source: RevenueBase Database · checked Sep 19, 2026
15	Convergint Technologies	Strong evidence	Atlanta, United StatesHQ checked Sep 19, 2026	5,001-10,000	202 contacts →
	Strong evidence “Electronic Security Integrator Access Control Closed Circuit Television Intercom” Source: RevenueBase Database · checked Sep 19, 2026
16	Amag Technology	Strong evidence	Hawthorne, CA, United StatesHQ checked Sep 19, 2026	201-500	177 contacts →
	Strong evidence “AMAG Technology is a market leader in Physical Access Control, Identity Management and integrated security solutions.” Source: RevenueBase Database · checked Sep 19, 2026
17	Aegis Protective Services	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 19, 2026	201-500	165 contacts →
	Indirect evidence “Security Guard and Technology Services.” Source: RevenueBase Database · checked Sep 19, 2026
18	Boon Edam USA	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 19, 2026	501-1,000	159 contacts →
	Indirect evidence “Boon Edam is a global market leader in Secured Entry solutions and Revolving Doors.” Source: RevenueBase Database · checked Sep 19, 2026
19	Sentry Security	Partial evidence	Wheeling, IL, United StatesHQ checked Sep 19, 2026	n/a	159 contacts →
	Partial evidence “Comprehensive, cutting-edge integrated security systems to protect your people, business and assets for years to come.” Source: RevenueBase Database · checked Sep 19, 2026
20	Vicon Industries	Partial evidence	Hauppauge, NY, United StatesHQ checked Sep 19, 2026	51-200	156 contacts →
	Partial evidence “Since 1967, Vicon has been a leading provider of mission-critical security surveillance systems.” Source: RevenueBase Database · checked Sep 19, 2026
21	OLD Account	Indirect evidence	Hammond, LA, United StatesHQ checked Sep 19, 2026	n/a	156 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
22	VTI Security	Indirect evidence	Burnsville, MN, United StatesHQ checked Sep 19, 2026	1,001-5,000	143 contacts →
	Indirect evidence “For almost 40 years, VTI has been called upon and recognized by our industry for a full range of advanced physical security technologies.” Source: RevenueBase Database · checked Sep 19, 2026
23	Swiftconnect	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	51-200	143 contacts →
	Partial evidence “SwiftConnect connects identity and physical access, enabling secure, scalable entry across your environment.” Source: RevenueBase Database · checked Sep 19, 2026
24	EPS Security	Indirect evidence	Grand Rapids, MI, United StatesHQ checked Sep 19, 2026	201-500	140 contacts →
	Indirect evidence “A home and business security provider, EPS Security was founded in Grand Rapids, Michigan.” Source: RevenueBase Database · checked Sep 19, 2026
25	Locknet	Indirect evidence	Nicholasville, KY, United StatesHQ checked Sep 19, 2026	51-200	130 contacts →
	Indirect evidence “At LockNet, we are all about doors and locks.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: access control system providers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names access control system providers.
Partial evidence: Its own public description names part of access control system providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name access control system providers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,209 access control system providers based in the United States

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Access control system providers based in the United States at a glance

As of Sep 19, 2026

31.1%Verified-email coverage

18.1Average contacts per company

11-50Median size (employees)

2.2%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

529

11-50

516

51-200

119

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,209 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among access control system providers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “access control system providers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names access control system providers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among access control system providers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 6,819 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Access control system providers by metro

Access control system providers in New York26

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names access control system providers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many access control system providers are there based in the United States?

RevenueBase identified 1,209 access control system providers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Automated Systems Design, INC, headquartered in Alpharetta, tops this list with the largest team on record.

Which city has the most access control system providers?

New York leads with 26 headquartered companies, followed by Miami (19) and Dallas (16).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 6,819 verified decision-maker contacts tracked across these 1,209 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.