Yeah mine's in my daughter's bedroom as is the boiler, so can't put a price on this, the earlier warning the better.
Thank you. Worth knowing that, which means it's worth every penny
The digital one's will read out any Monoxide present before the main alarm sounds. A good visual reference for even minor leaks providing you can be bothered to check it. I bought the digital one for £17 a few months back.
Ok thanks for the info.