With so many on offer these days, it is good to have a name you can recognise. The Gunson G4125 Gastester Digital is certainly that and will be a superb purchase. For this reduced price, the Gunson G4125 Gastester Digital comes widely recommended and is a regular choice with lots of people.
Product Description
Compact and portable 12v multi-function exhaust gas CO meter. Calibrate in fresh air, no filters to change. Accurate to 0.5% CO measurement