Introduction (Does It Do What It Should) I have to admit, I have at least heard of Radon. I mean, it is an element, after all, its number 86 on the periodic table. It is also a naturally occurring radioactive gas, and poses a health risk, like it causes lung cancer. Radon is invisible, odorless, and it can enter homes through cracks and openings in foundations and walls. … [Read more...] about AEG Test Hound 3699 Radon Detector