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Kidde Firex KF10 review

£13.00 Typical price

Test scoreShow Context

Key features
  • Mains only
Expert review

The Kidde Firex KF10 is a mains-powered smoke detector with a replaceable 9V alkaline back-up battery. It uses an ionisation type smoke sensor, which the manufacturer claims is best suited for areas with a risk of fast-flaming fires. It features a tamper-resistant locking device to prevent it being removed without the appropriate tools. The KF10 is suitable for homes in Scotland, where from February 2022 smoke alarms need to be able to link to other alarms in the home. You can hardwire it to 23 other compatible mains-powered alarms, such as the Kidde KF30 heat alarm, to create an interconnected system: if one alarm activates, all the others will be triggered too. The alarm has a six-year warranty. But is it any good at raising the alarm when needed? To find out, we tested it. Read on for our full review.

What's included:
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Last checked by Which?

November 2021

First reviewed by Which?

August 2021

Released

July 2017

Test results

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

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Best Buys and Don't Buys
We have tested 38 smoke alarms and found that there are 9 Don't Buys and 8 Best Buys.
Range of Smoke alarm scores
  1. 0%
    Lowest score
  2. 38%
    Average score
  3. 93%
    Highest score
We'll show you where this model sits on the scale so that you can see how it compares to smoke alarms we've tested
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Put us to the test

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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