A DEF Network company


Fire safety system

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Flammable product storage
Generator set
production space
production space
Electrical cabinet
Recommended solutions

Ex range

Water spray

Video detection

Suction detection


Gas extinguishing system

Gamme Ex

– Complete range
– NF certified ATEX Linear smoke detector


The EX range is designed to monitor the fire risk in ATEX environment (risk of explosion). It consists of smoke, heat, flame detectors and a manual trigger and includes in particular the only NF certified linear smoke detector for ATEX environment: LYNX L30 ADF with IP66.

Water spray

– Over 20 years of experience
– Total and complete control of the installation


With more than 20 years of experience and internal teams of fitters, the DEF network is a recognised player in water spray extinguishing solutions. This extinguishing solution is the result of a water spray in the form of fine droplets (<1 mm) at pressures between 12 bar (low pressure) and 100 bar (high pressure), provided by a technology of specially designed diffusers. Water spray has a double effect: it lowers the temperature and simultaneously smothers the fire by lowering the oxygen concentration. Furthermore, the small diameter of the required piping networks facilitates its installation, even in congested spaces. Low or medium pressure water spray is recommended for protection of engine compartments and other auxiliary rooms.


– Innovative solution
– Smoke and flame detection in addition to conventional fire detection
– Ideal for large volumes and complex environments


FIRE EYE is a solution for smoke and flame detection by image analysis.
It consists of video cameras loaded with a powerful image analysis algorithm and Visiodef 3D supervision software, enabling easy operation.

The use of this solution is recommended only in addition to conventional fire detection, in particular on sites with complex environments where the so-called “traditional” detection is not optimal in relation to the risk to protect, such as for very high-ceiling rooms where the stratification of fumes occurs well before the ceiling (aircraft hangar, etc.), or premises with very strong ventilation (tunnels, etc.).


Smoke detection by suction

– High sensitivity and early detection
– Accurate location of fire outbreak
– Easy maintenance


PHENIX/S2H is a suction smoke detection system particularly suitable for monitoring equipment or critical volumes, such as bays or computer rooms.

Its high sensitivity enables early fire detection and offers the operator the possibility of intervening at the earliest.

The flexibility of the tubular network associated with the S2H detector integrated into it enables closer monitoring of the risk and precise localization of the source of a fire.

Forte – Antares IV

– Addressable and modular system
– Easy and intuitive operation
– Colour screen with pictogram management
– Connectivity and service offer
– Interactivity for hourly risk management


Forte – Antares 4 are 2 addressable controllers (SDI and CMSI) that have been designed with excellent ergonomics. The Forte in particular uses a colour screen, dedicated pictograms and an optimised layout of LEDs and keys, thereby enabling easy and intuitive operation especially for “non-specialist” users.
The modularity of their system architecture enables in particular Front Panels to be integrated into extra flat bays (thickness 300 mm) to free up space and volume for the operator.
Thanks to interactivity with the detectors (Orion +, OAO-O, etc.), the sensitivity and detection mode can change according to a time slot for a perfect temporal adaptation to the risks and constraints of the supervised area.
The connectivity of the panels allows the user to know the status of his installation in real time thanks to the def-sentinel.com proposal.
The large modularity of the panels, in a box, in a bay, in a network makes it possible to cover all types and sizes of sites (small, large, multi buildings, high-rise buildings, etc.)


– Standalone solution for electrical cabinets
– High sensitivity smoke detection by suction
– CNPP recommendation
– Automatic extinguishing by neutral gas (argon-nitrogen)
– Quick installation
– Connectivity


This standalone product is designed for the automatic fire detection and extinguishing in electrical cabinets. Its modular design makes it easy and quick to install.

The EN54-20 certified high-sensitivity dual detection by suction system detects the outbreak of a fire at the smoke emission stage, in accordance with CNPP recommendations (document AMA1005 – Sept 2010). In the event of double detection, the alarm management and extinguishing control system then triggers automatic extinguishing inside the cabinet volume. The neutral extinguishing agent (argon-nitrogen) lowers the oxygen level in the cabinet until the fire is extinguished. It has no effect on the electrical components and thus enables quick restarting of the installations.

In addition to the local audible and visual alert, it is a communicating system: an Ethernet link is used to connect the PROCYON + to a control and data acquisition system of a site or on a GTC.

Services associés


Musée du Louvre

Paris (75)

Complete migration of the Fire Safety System and safety PA system.

Institut Pasteur

Paris (75)

Overhaul of the Fire Safety System.

Générale de Manutention Portuaire

Le Havre (76)

Detection and extinguishing solutions.

DEF, premier constructeur européen en systèmes de sécurité incendie, propose une offre large de solutions dédiées à la sécurité de votre site. DEF s’appuie sur son réseau d’entreprises expertes pour répondre à l’ensemble des enjeux de tout exploitant, en vue de garantir la protection des personnes et des biens.
Avec DEF, optez pour la sécurité à 360° !
DEF vous assure de la disponibilité optimale de votre Système de Sécurité Incendie en mettant en œuvre les moyens d’un constructeur, ses équipes d’experts, ses produits certifiés, ses processus éprouvés et son expérience.
DEF conçoit, développe et fabrique depuis 1958 des produits de détection incendie et de sécurité incendie. Aujourd’hui sa gamme de produits intègre des métiers connexes et permet de répondre aux problématiques de bâtiments de taille et de type très différents avec une solution dédiée à la sécurité incendie.
DEF vous propose de retrouver ses produits dans son catalogue.
Network of expert companies in fire safety