結果 : what does a photoelectric smoke alarm detect
1:44

What is the Difference? Photoelectric vs Ionisation

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How does a Photoelectric Smoke Detector Work?

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Photoelectric Vs Ionization Smoke Detector: Which Is More Effective? [2023]

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6:59

Smoke Alarm Facts: "Ionization vs Photoelectric"

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Understanding Smoke and Carbon Monoxide Detectors | Ask This Old House

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24:56

There are two types of smoke alarm. One of 'em ain't so good.

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Smoke Detectors 101 | Consumer Reports

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