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This carbon monoxide (CO) alarm can’t detect CO reliably and that’s why we’ve made it a Don’t Buy. It failed to sound the alarm time and time again in our tests, and the consequences of this happening in your home don’t bear thinking about. If you have an alarm that looks like this, replace it with a Best Buy as soon as possible and contact the seller to request a refund.
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- Aug 2024Last checked by Which?
- Jun 2023First reviewed by Which?
- Jan 2023Released