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Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

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Speed really matters when it comes to smoke alarms. That’s why our reviews reveal exactly how quickly each alarm detects smoke in our four test fires. Only the very fastest smoke alarms can become Best Buys. Alarms that fail to detect the presence of smoke are Don’t Buys. To find the best smoke alarm for you – one that will detect smoke quickly every time – check out our smoke alarms buying guide.

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