Highlights of this report


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We recommend


The best-performing smoke alarms from our test of 18. Read more

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Test results


How the alarms performed in smouldering and flaming fires. Read more

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Which type do you need?


The differences between photoelectric and ionisation alarms. Read more


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Some smoke alarms stay silent when surrounded by smoke from smouldering fires.

A smoke alarm that fails to detect a smouldering fire could kill you. The earlier you’re warned of the presence of smoke, the more time you have to escape and the less (toxic) smoke you end up breathing.

We tested 18 photoelectric and ionisation models - find out which ones could save your life.