Fire Alarm Categories

Your fire risk assessment will state which category standard your fire alarm system should be fitted to. Below is a brief description of the category types:

Category M systems are Manual.

Category “M” system - manual call points and therefore incorporate no automatic detection.

Category L systems are for the protection of life.

Category “L1” system - manual detection at defined positions and automatic detection in all areas of the protected premises.

Category “L2” system - manual detection at defined positions and automatic detection in all escape routes, rooms which open onto escape routes and high risk or fire hazard areas of the protected premises.

Category “L3” system - manual detection at defined positions and automatic detection in all escape routes and rooms which open onto escape routes of the protected premises.

Category “L4” system - manual detection at defined positions and automatic detection in all escape routes of the protected premises.

Category “L5” system - manual detection at defined positions and automatic detection in areas designed to satisfy a specific fire safety objective of the protected premises.

Category P systems are for the protection of property.

Category “P1” – automatic fire detection fitted in all areas of the building.

Category “P2” - automatic fire detection fitted in defined areas of the building.

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