10 UNSAFE CARBON MONOXIDE DETECTORS ARE BEING REMOVED FROM SALE
The Which? magazine has discovered that there are at least 10 types of Carbon Monoxide detectors that are unsafe for use. It is therefore advised that if you depend on a carbon monoxide detector, you should check whether your detector is one of those affected.
As Which? seem to make it as difficult as possible for me to copy their article here for you with any clarity, I have to advise you to visit their original article on this link.