Company lists · Data refreshed November 2026

Top 25 Security system maintenance contractors worldwide

RevenueBase identified 8,582 company matches for security system maintenance contractors worldwide as of November 2026 and tracks 77,144 professional contacts across them, including 14,581 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for security system maintenance 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 November 5, 2026. Country and city lists for security system maintenance 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 Nov 5, 2026 How this list was built
8,582Companies
77,144Contacts tracked
14,581Verified emails
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The 25 largest security system maintenance contractors worldwide

Ranked by team size
Top 25 of 8,582 company matches for security system maintenance contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchIstanbul, TürkiyeHQ recorded Nov 5, 20261,001-5,0002,367 contacts →

Exact match

“Pronet is the leading electronic security company that offers residential and commercial security solutions in Turkey.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchIrving, TX, United StatesHQ recorded Nov 5, 20261,001-5,0002,178 contacts →

Exact match

“Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchWest Palm Beach, TN, United StatesHQ recorded Nov 5, 2026501-1,000927 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 · Nov 5, 2026 · View company records in RevenueBase
4Exact matchMississauga, NS, CanadaHQ recorded Nov 5, 20261,001-5,000841 contacts →

Exact match

“Chubb provides an unparalleled portfolio of security and life safety solutions to Canadian institutions, businesses and residences.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchUniontown, IL, United StatesHQ recorded Nov 5, 202610001+837 contacts →

Exact match

“Securitas knows Security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchSpainHQ recorded Nov 5, 20261,001-5,000756 contacts →

Exact match

“comienzos de 1989 se funda SABICO SEGURIDAD S.A, estando inscrita en el Registro de Empresas de Seguridad con el nº 1731.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchKingston 5, JamaicaHQ recorded Nov 5, 20261,001-5,000605 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 · Nov 5, 2026 · View company records in RevenueBase
8Exact matchZollikofen, SwitzerlandHQ recorded Nov 5, 2026501-1,000567 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 · Nov 5, 2026 · View company records in RevenueBase
9Exact matchBrazilHQ recorded Nov 5, 2026n/a465 contacts →

Exact match

“A Inviolável atua no mercado há mais de 25 anos.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchSouthfield, OH, United StatesHQ recorded Nov 5, 2026501-1,000408 contacts →

Exact match

“Guardian Alarm is one of the largest independently-owned security companies protecting both homes and businesses throughout the Midwest.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchSantos, BrazilHQ recorded Nov 5, 20261,001-5,000375 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 · Nov 5, 2026 · View company records in RevenueBase
12Exact matchBradford, United KingdomHQ recorded Nov 5, 2026501-1,000352 contacts →

Exact match

“Kings Secure Technologies (KST) is a high-end, enterprise-level systems integrator.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchNashville, TN, United StatesHQ recorded Nov 5, 2026201-500328 contacts →

Exact match

“Headquartered in Nashville, TN, with branches throughout the Southeastern United States, ADS Security, a Vector Security company, is the 20th largest electronic security company…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchSyosset, NY, United StatesHQ recorded Nov 5, 2026201-500306 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchOrange, NJ, United StatesHQ recorded Nov 5, 202651-200258 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 · Nov 5, 2026 · View company records in RevenueBase
16Exact matchSingapore, JapanHQ recorded Nov 5, 202651-200248 contacts →

Exact match

“AVTEL specialise in electronic security systems.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchAurora, IL, United StatesHQ recorded Nov 5, 2026201-500245 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 · Nov 5, 2026 · View company records in RevenueBase
18Exact matchBoca Raton, FL, United StatesHQ recorded Nov 5, 20261,001-5,000239 contacts →

Exact match

“At Red Hawk Fire & Security, we install, test and inspect, integrate, service and monitor a comprehensive range of advanced technologies custom designed for your specific business…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchSeattle, WA, United StatesHQ recorded Nov 5, 202651-200231 contacts →

Exact match

“Guardian Security Systems is the leader in residential and commercial life safety solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchEvendale, OH, United StatesHQ recorded Nov 5, 2026201-500226 contacts →

Exact match

“Silco Fire & Security isn’t just a company-it’s a mission.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchNoida, IndiaHQ recorded Nov 5, 2026201-500226 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 · Nov 5, 2026 · View company records in RevenueBase
22Exact matchNew York, NY, United StatesHQ recorded Nov 5, 2026201-500206 contacts →

Exact match

“Since 1969, thousands of businesses across the country have entrusted their protection to DGA Security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchIvry Sur Seine, FranceHQ recorded Nov 5, 2026201-500201 contacts →

Exact match

“ERIS appartient à ESTYA, un groupement d’entreprises spécialisé en sécurité incendie et sûreté électronique, piloté par Ludovic Avec 50 ans d'expertise dans la sécurité incendie…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchSarajevo, Bosnia and HerzegovinaHQ recorded Nov 5, 2026n/a194 contacts →

Exact match

“Firma Unilab d.o.o.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchLeeds, United KingdomHQ recorded Nov 5, 202651-200184 contacts →

Exact match

“A premier provider of security products and services across England, Gough & Kelly was formed in 1988 to influence and inspire the security and electrical marketplace by providing…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 8,582 security system maintenance contractors worldwide

See the full list, filter by size, metro and specialty, and access 14,581 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Security system maintenance contractors worldwide at a glance

As of Nov 5, 2026
18.9%Verified-email coverage
9.0Average contacts per company
1-10Median size (employees)
1.4%Largest-city concentration · London
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
4,644
11-50
2,812
51-200
690
201-500
130
501-1,000
41
1,001-5,000
30
5,001-10,000
5
10001+
6

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 security system maintenance contractors are linked below.
What qualifies
Company records worldwide whose business descriptions match “security system maintenance 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 14,581 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 November 5, 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.

Security system maintenance contractors by location

30 lists · largest first

Every Security system maintenance 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 “security system maintenance contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many security system maintenance contractors are there worldwide?

RevenueBase identified 8,582 company matches for security system maintenance contractors worldwide as of November 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?

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

Which country has the most security system maintenance contractors?

The United States leads with 1,894 companies, followed by the United Kingdom (1,219) and Brazil (624). Every security system maintenance contractors list by country and city is linked on this page.

Which city has the most security system maintenance contractors?

London leads with 122 company records, followed by Sao Paulo (118) and Rio De Janeiro (38).

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 14,581 professional contacts with verified work emails tracked across these 8,582 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 November 5, 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.