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Unbranded Carbon monoxide alarm 7 review

Product alert

Don't Buy this carbon monoxide (CO) alarm – it failed to sound in almost all of our carbon monoxide detection tests

This unsafe carbon monoxide (CO) alarm failed to detect the deadly gas in all but one of our tests - registering 37 failures to detect CO and sound the alarm - so we’re making it a Don’t Buy.

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Expert review

This unsafe carbon monoxide (CO) alarm failed to detect the deadly gas in all but one of our tests - registering 37 failures to detect CO and sound the alarm - so we’re making it a Don’t Buy. We bought it from eBay, but it’s available from other online marketplaces too. In common with a collection of other cheap and unbranded alarms that we have bought and tested through this kind of site, you simply can’t rely on it to detect carbon monoxide when you need it to. If you have an alarm that looks like this in your home, replace it with a well-known brand from a high street store or reputable online retailer. 

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First reviewed by Which?

October 2019

Released

January 2019

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 24 carbon monoxide detectors and found that there are 10 Don't Buys and 14 Best Buys.
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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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