Apparently, there are two types of smoke detectors: photoelectric detector and ionization detector. And it is the ionization detector that contains radioactive Americium 241 or Radium 226. Here is a link for more information:
I am actually not sure what my current smoke detector is, I never really thought about looking at it, that is probably bad, but for sure I know my next one to purchase I will look for a photoelectric type.
Another interesting note I learned about is that Carbon Monoxide detectors all have an expiration date of around 5 years, and they are meant to be replaced when they expire.
Another interesting note I learned about is that Carbon Monoxide detectors all have an expiration date of around 5 years, and they are meant to be replaced when they expire.
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