Home Radon Detectors - Airthings, HOUND-1011S, Radon One
Radon is the second-leading cause of lung cancer overall and the leading cause among people who never smoked, according to the EPA. You can't see it, smell it, or taste it, and the only way to know whether it's collecting in your basement is to measure. A continuous digital detector does that for the price of one or two old-school charcoal kits, and it keeps measuring long after a kit would have been mailed off to a lab.