A Category L2 fire alarm system is a further enhancement of protection to a Category L3 system but with additional detection in an area where there is a high chance of ignition. These areas can be identified following a fire risk assessment (FRA) undertaken by a competent person.
A Category L2 fire alarm system has automatic detectors installed in escape routes, rooms adjoining escape routes, and high hazard rooms e.g. kitchens, boiler rooms, plant rooms, sleeping risk, storerooms (if not fire-resistant) and is designed to give occupants as much time as possible to be evacuated before escape routes become impassable due to smoke and flames.
In medium-sized premises (sleeping no more than ten residents) a Category L2 system is ideal.