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12 points

But how would they sell more smoke detectors that way?

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5 points

Doesn’t the isotope in the detection chamber degrade and needs to be replaced in 10 years anyway?

https://www.epa.gov/radtown/americium-ionization-smoke-detectors

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6 points

most smoke detectors nowadays are optical.

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6 points
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Both kinds exist. Both have different benefits and drawbacks.

You shouldn’t only be using one type in your house.

Optical is great for detecting large smoke particles quickly. If the smoke is small particles, though, it’ll need to be rather dense before it’ll go off. Ionizing detectors have the opposite issue; they react quickly to small particles but can’t detect large particles that well.

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5 points
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The half life of americium 241 is 432.2 years, so no

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4 points

Those detectors are inferior to optic detectors and should not be used any more.

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6 points

They can sell more smoke detectors in HELLLLL

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