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FireAngel ST-620 Thermoptek 10 Year Life Smoke Alarm review

£10.00 Typical price

Test score %

Key features
  • Smoke alarm
  • Optical thermal smoke alarm
Reviewed

FireAngel has labelled the ST-620 smoke alarm ‘toast-proof’, due to its efforts to avoid nuisance false alarms. But has it got what it takes to react quickly and effectively to a real house fire? To find out, we put it to the test against four different types of fire and assessed both its response times and volume. Read on for our results, which reveal whether the ST-620 smoke alarm is one you can rely on.

Included in our expert review
  • Pros and cons
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Test results

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

Find out how we test smoke alarms
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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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We have tested 27 smoke alarms and found that there are 7 Don't Buys and 4 Best Buys.
Range of Smoke alarm scores
  1. 0%
    Lowest score
  2. 46%
    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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