We tested 20 models to see which respond fastest to smoke.
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Overall score is based on smouldering and flaming fire sensitivity.
“Good” or “OK” meant the alarm sounded quickly enough to alert you to danger.
“Poor” meant the alarm took significantly longer to sound.
“Extreme” sensitivity meant the alarm sounded so quickly they are more likely to issue false alarms.
Ease of use includes instructions and ease of installation.
See "About our test" for more information.
Noise is measured in a quiet room 3m from the alarm.
Price is from a March 2018 price survey.
Photoelectric and thermal
Product is replaced for free every time it fails (requested via the manufacturer website)
They consistently fail (low battery chirping after a year, randomly go off in the middle of the night)
No, this product has too many drawbacks.