There are two main types of alarms used in homes, photo-electric and ionisation smoke alarms.
Recent research indicates that photo-electric alarms provide the best protection across a range of fires.
Photo-electric alarms are more effective at detecting slow burning and smouldering fires.
They are suitable for hallways, sleeping areas, living rooms, kitchens and small apartments.
Ionisation alarms are more effective at detecting free burning fires with flames, and are suitable for hallways and sleeping areas.
If you are installing more than one smoke alarm, you may want to consider having a mix of ionization and photoelectric alarms and
having them interconnected so that when one alarm sounds all the alarms sound to provide the earliest possible warning.
For homes which already have ionisation alarms, we recommend that they be supplemented with additional, hard-wired,
interconnected photo-electric alarms. When existing ionisation alarms reach the end of their serviceable life
(approximately 10 years) they should be replaced with photo- electric alarms.