The two main types of smoke alarms used in homes in Australia are photoelectric smoke alarms and ionization smoke alarms. Photoelectric alarms are favored by fire departments for their ability to detect smoldering fires. Ionization alarms are more sensitive to fast-burning fires. All smoke alarms must comply with Australian Standard AS 3786.
Detailed Smoke Alarm Information
Photoelectric smoke alarms:
These alarms use a light beam and photoelectric tube to detect smoke particles. They are generally more sensitive to smoldering fires, which produce a lot of smoke before burning.
Ionization smoke alarms:
These alarms use a small amount of radioactive material to detect smoke particles. They are more sensitive to fast-burning flames.
Australian Smoke Alarm Standards
Australian Standard AS 3786:
This standard outlines the requirements for smoke alarms sold in Australia.
Power supply with battery backup:
Since 1997, the National Building Code requires all new homes and renovations to be equipped with mains-powered smoke alarms with battery backup.
Interconnected Alarms:
In many states, if multiple alarms are installed, they must be interconnected, meaning if one alarm goes off, they all go off.
Lithium Battery Alarms:
Many fire departments recommend using 10-year lithium battery-powered smoke alarms that last for the life of the device without having to replace the battery every year.
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