I wonder what Nest Protect is using to detect smoke that it false alarms, in a pot with a lid on it, without any smoke anywhere in the vicinity. Unsmart smoke

I wonder what Nest Protect is using to detect smoke that it false alarms, in a pot with a lid on it, without any smoke anywhere in the vicinity. Unsmart smoke detectors use minute amounts of radioactive materials (such as Americium-241[1]) and almost never false, although they can be annoying if the source of smoke is otherwise legitimate. My chemistry professor in college pointed out that a big stack of smoke detectors in a hardware store was not regulated and yet would collectively emit radiation that would probably exceed legal limits for people walking by. I thought about that the last time I was in Home Depot and there was a huge stack of $10 smoke detectors. (Yep. I bought three.) 1. http://www.world-nuclear.org/info/Non-Power-Nuclear-Applications/Radioisotopes/Smoke-Detectors-and-Americium/ http://www.world-nuclear.org/info/Non-Power-Nuclear-Applicat...