CO detectors are life-safety equipment. The regulatory burden for laboratory certification and approval is much higher for them. If you put an air-quality dete

CO detectors are life-safety equipment. The regulatory burden for laboratory certification and approval is much higher for them. If you put an air-quality detector into your device and it's reading 30% lower than reality it's no big deal. If you put a CO detector into your device and it's reading 30% lower than reality you may face massive liabilities. It isn't a "hey, why not" feature.