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DEF

We take care of things, so you can enjoy life

Since its founding more than 60 years ago, DEF has been dedicated, with a sense of responsibility and loyalty, to its core business: fire detection. DEF, an independent French company, offers a comprehensive range of high-quality solutions and services in the field of fire safety systems. With its unique expertise spanning the entire lifecycle of installations, DEF supports projects of all sizes, from design through construction to long-term maintenance.

entreprise def
  • Family-owned business
  • Recognised expertise
  • Made in France

A few figures

Here are some key figures to help you better understand our company: our founding date, the number of employees, our revenue, and our presence through our branches.

1958

Détection Électronique Française is born

+950

Committed and passionate employees

144,7 M €

Revenue generated in 2024

33

Local branches throughout France

valeurs def

Our mission

Our mission is to protect our customers from a wide range of fire hazards and to support them over the long term to ensure the sustainability of their businesses and the safety of the occupants of their facilities.

Our values

Listening to the customer

We understand our customers’ needs and work collaboratively to build lasting partnerships.

Innovation

We promote the freedom to undertake, which stimulates our creativity and our ability to innovate.

Simplicity

The pursuit of simple and open professional relationships based on active listening and common sense, which foster dynamic and effective collaboration.

Professionalism

It is through our expertise in the field, our commitment to quality and transparency, and our dedication to fulfilling our commitments that we earn and maintain our customers’ trust.

Respect and Diversity

Employees at each company in the DEF network are part of a team to which they contribute and are committed.

Our professions & their responsibilities

DEF at the heart of the Réseau DEF

DEF is the original company upon which the Réseau DEF was built—an international, independent network of companies specialising in fire safety and a major player in the European market.
Through its 69 complementary companies and the 2,800 employees who work there every day, Réseau DEF provides products and services for projects of any complexity, anywhere in the world.

  • 65
  • More than 65 companies specialising in fire safety
  • 100
  • 100 R&D engineers
  • 13
  • Operating in 13 countries around the world
  • 13
  • There are 13 industrial sites

Branch network

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