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FireAngel ST-625 Thermoptek Smoke Proof Smoke Alarm review

Key features
  • Smoke alarm
  • Battery only
  • Optical smoke alarm
Reviewed

The FireAngel ST-625 Thermoptek Toast proof Smoke Alarm comes with a five-year warranty and – as its name suggests – claims to be ‘toast proof’. To put this claim to the test and to see how well this alarm detects smoke from real fires, we took it to our lab. Read on to find out how quickly it responded to four different fires and to find out whether this Fire Angel is actually ‘toast proof’.

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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RetailerRetailer ratingPriceIn stock
Amazon.co.uk
£10.50
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Make smarter choices

We have tested 34 smoke alarms and found that there are 9 Don't Buys and 5 Best Buys.
Range of Smoke alarm scores
  1. 0%
    Lowest score
  2. 43%
    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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First month only £5, then £9.99 per month, cancel any time

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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