Carbon Monoxide detector

[zero]

Anyone point the way to a seriously OTT sort - like the gas people use ?

not some £20 job from B&Q

Thanks

[Gel]

That is a CO monitor that needs calibrating once a year; cost from =A3200 upwards.Try

This would be of use if an installer; if you just need a CO alarm with digital readout of CO level try this for =A330:

[zero]

thanks