Company lists · Data refreshed September 2026

Top 25 Access control system contractors worldwide

Name: Access control system contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 9,326 companies tracked

RevenueBase identified 9,326 company matches for access control system contractors worldwide as of September 2026 and tracks 83,431 professional contacts across them, including 21,295 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for access control system contractors worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 30, 2026. Country and city lists for access control system contractors follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 30, 2026 How this list was built

9,326Companies

83,431Contacts tracked

21,295Verified emails

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The 25 largest access control system contractors worldwide

Ranked by team size

Top 25 of 9,326 company matches for access control system contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 30, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Allegion	Exact match	Dublin 7, IrelandHQ recorded Sep 30, 2026	10001+	3,024 contacts →
	Exact match “Allegion (NYSE: ALLE) is a global pioneer in seamless access, with leading brands like CISA®, Interflex®, LCN®, Schlage®, SimonsVoss® and Von Duprin®.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
2	Automated Systems Design, INC	Exact match	Alpharetta, GA, United StatesHQ recorded Sep 30, 2026	n/a	2,678 contacts →
	Exact match “Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
3	Security 101	Exact match	West Palm Beach, FL, United StatesHQ recorded Sep 30, 2026	501-1,000	849 contacts →
	Exact match “Security 101® is a nationwide leader in designing, installing, and maintaining advanced security systems tailored to the unique needs of organizations of all sizes.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
4	Securiton AG	Exact match	Zollikofen, SwitzerlandHQ recorded Sep 30, 2026	501-1,000	542 contacts →
	Exact match “Securiton AG has been a leading manufacturer and installer of alarm and security systems since 1948 and is part of the Swiss Securitas Group.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
5	Kingalarm Systems	Exact match	Kingston 5, JamaicaHQ recorded Sep 30, 2026	1,001-5,000	542 contacts →
	Exact match “KingAlarm Systems began operations in March and, in a relatively short time, has become the largest Electronic Security Company not just in Jamaica but the entire Caribbean…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
6	Tech Systems Inc. TSI	Exact match	Buford, GA, IndiaHQ recorded Sep 30, 2026	501-1,000	527 contacts →
	Exact match “Since 1987, Tech Systems, Inc.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
7	Assa Abloy Opening Solutions Americas	Exact match	New Haven, CT, United StatesHQ recorded Sep 30, 2026	10001+	506 contacts →
	Exact match “ASSA ABLOY Opening Solutions Americas provides a complete range of door opening products for access solutions in homes, businesses, and institutions.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
8	Eryma Security Systems	Exact match	Issy-les-moulineaux, FranceHQ recorded Sep 30, 2026	201-500	457 contacts →
	Exact match “En tant qu’intégrateur ouvert de solutions de sûreté électroniques, nous vous accompagnons dans la protection de vos biens et personnes.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
9	The Cook & Boardman Group, LLC	Exact match	Winston-Salem, NC, United StatesHQ recorded Sep 30, 2026	1,001-5,000	445 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
10	Napco Security Technologies	Exact match	Amityville, NY, United StatesHQ recorded Sep 30, 2026	501-1,000	427 contacts →
	Exact match “NAPCO Security Technologies (NASDAQ: NSSC) is one of the world's leading manufacturers of technologically advanced electronic security equipment including intrusion and fire alarm…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
11	PCSS	Exact match	SingaporeHQ recorded Sep 30, 2026	501-1,000	387 contacts →
	Exact match “PCSS is a Singapore-based systems integrator with more than 25 years of experience and accolades in providing secure, reliable and state-of-the-art security solutions.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
12	Kings Secure Technologies	Exact match	Bradford, United KingdomHQ recorded Sep 30, 2026	501-1,000	326 contacts →
	Exact match “Kings Secure Technologies (KST) is a high-end, enterprise-level systems integrator.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
13	Dormakaba Germany	Exact match	Ennepetal, GermanyHQ recorded Sep 30, 2026	10001+	324 contacts →
	Exact match “Kaba Group, from Rümlang in Zurich (Switzerland), and Dorma Group, based in Ennepetal near Düsseldorf (Germany), merged to form dormakaba in September 2015.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
14	Embraps	Exact match	Santos, BrazilHQ recorded Sep 30, 2026	1,001-5,000	321 contacts →
	Exact match “A empresa oferece profissionais qualificados para diversas funções, entre elas, portaria e/ou controlador de acesso, auxiliar de serviços gerais, zeladoria, atendente, auxiliar…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
15	Certego Group	Exact match	Västerås, SwedenHQ recorded Sep 30, 2026	1,001-5,000	311 contacts →
	Exact match “CERTEGO is a Nordic expert in access and monitoring solutions.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
16	AFA Protective Systems, INC	Exact match	Syosset, NY, United StatesHQ recorded Sep 30, 2026	201-500	302 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
17	Cogelec	Exact match	Mortagne Sur Sèvre, FranceHQ recorded Sep 30, 2026	201-500	295 contacts →
	Exact match “Cogelec, is an entrepreneurial manufacturer with a 20-year pedigree.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
18	Paxton Access LTD	Exact match	Brighton, United KingdomHQ recorded Sep 30, 2026	201-500	255 contacts →
	Exact match “With 40 years of experience, Paxton is a company passionate about technology.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
19	Wittenbach	Exact match	Sparks, MD, United StatesHQ recorded Sep 30, 2026	201-500	244 contacts →
	Exact match “For over 50 years, Wittenbach has been a trusted leader in advanced security solutions in financial and commercial industries.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
20	NAVCO	Exact match	Orange, CA, United StatesHQ recorded Sep 30, 2026	51-200	232 contacts →
	Exact match “One of the largest privately held national electronic security system integrator in the USA, NAVCO keeps you one step ahead of ever-changing technology.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
21	Manusa	Exact match	Sant Cugat Del Vallès, SpainHQ recorded Sep 30, 2026	201-500	229 contacts →
	Exact match “Founded more than 60 years ago, Manusa has grown to become a leading company in the creation, design, development and service of all types of smart access.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
22	AVTEL	Exact match	SingaporeHQ recorded Sep 30, 2026	51-200	228 contacts →
	Exact match “AVTEL specialise in electronic security systems.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
23	Alarm Detection Systems	Exact match	Aurora, IL, United StatesHQ recorded Sep 30, 2026	201-500	225 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
24	ANG India LTD	Exact match	Noida, IndiaHQ recorded Sep 30, 2026	201-500	210 contacts →
	Exact match “A’nG INDIA specializes in Security surveillance, Fire Detection and CCTV products with system design and custom engineering being a major strength.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
25	Datawatch Systems	Exact match	Bethesda, MD, United StatesHQ recorded Sep 30, 2026	201-500	206 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “access control system contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 9,326 access control system contractors worldwide

See the full list, filter by size, metro and specialty, and access 21,295 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Access control system contractors worldwide at a glance

As of Sep 30, 2026

25.5%Verified-email coverage

8.9Average contacts per company

1-10Median size (employees)

1.4%Largest-city concentration · Sao Paulo

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

4,930

11-50

3,322

51-200

790

201-500

118

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for access control system contractors are linked below.
What qualifies: Company records worldwide whose business descriptions match “access control system contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 21,295 professional contacts with verified work emails across the full matched dataset. 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 30, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Access control system contractors by location

33 lists · largest first

Every Access control system contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “access control system contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many access control system contractors are there worldwide?

RevenueBase identified 9,326 company matches for access control system contractors worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Allegion tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most access control system contractors?

The United States leads with 1,976 companies, followed by the United Kingdom (989) and Brazil (557). Every access control system contractors list by country and city is linked on this page.

Which city has the most access control system contractors?

Sao Paulo leads with 132 company records, followed by London (103) and Dubai (46).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 21,295 professional contacts with verified work emails tracked across these 9,326 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 30, 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 SmartSearch, 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.