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All our fire alarm systems are designed in accordance with the current British Standard 5839-1-2002.

Listed below are the various categories in the standard, and are used as a guide for system designers, fire authorities, building control, and insurance companies.

P1: All areas covered by Automatic Fire Detection.
If Manual Call Points are installed, i.e. Giving the implication, that at times the building will/may be occupied consideration must be given to the provision of adequate Audible Fire Alarm Sounders to warn the occupants of an activation of the Fire Alarm System.

All Systems installed for the Protection of Property must have means of
remote indicating that the Fire Alarm System has activated. Usually achieved by means of a Digital Communicator or the alike.

P2: Defined Areas of High Risk covered by Automatic Fire Detection.
Like a P1 System if Manual Call Points are installed, the provision of adequate Audible Fire Alarm Sounders to warn the occupants of an activation of the Fire Alarm System must be installed. Plus the provision of remote signalling.

L1: All areas covered by Automatic Fire Detection.

L2: As an L3 System.
i.e. Automatic Fire Detection on Escape Route, Rooms opening onto
Escape Routes, and including Defined Areas of High Risk.

L3: Automatic Fire Detection on Escape Routes, Rooms opening onto Escape Routes.

L4: Automatic Fire Detection on Escape Routes.
As well as only covering Escape Routes an L4 System does not exclude other Areas of Defined High Risk

L5: Automatic Fire Detection covering only defined areas of High Risk.
A Life System to this category must be subject to a very comprehensive, detailed and recorded Risk Assessment due to the possible ramifications of this type of system.

M or Manual.

Fire Alarm Systems fall broadly in to two groups - Conventional Systems or Analogue Addressable Systems.

CONVENTIONAL

'Conventional' Fire Alarm Systems, in their various forms, have been around for many years and have changed little in that time in terms of technology although design and reliability have improved significantly. However, Conventional Systems are a well-proven technology protecting many hundreds of thousands of properties worldwide.

Conventional systems usually consist of a central control and indicating panel to which are connected one or more trigger devices and two or more alarm sounders. The control panel itself is also connected to a primary power supply and a secondary standby supply. A Conventional Fire Alarm System is often the natural choice for smaller systems or where budget constraints exist.

ADDRESSABLE

Analogue Addressable Fire Alarm Systems differ from conventional systems in a number of ways and certainly add more flexibility, intelligence, speed of identification and scope of control, they have the advantage of indicating the source of the fire signal more accurately than conventional systems

For this reason Analogue Addressable Fire Alarm Systems are the natural choice for larger premises and more complex system requirements.

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