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Ionization Detectors
Photoelectric Detectors
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Chemistry of Smoke Detectors

     Smoke detectors are amazing inventions, because of the protection they provide to countless families. Smoke detectors save thousands of lives each year. There are two main types of of smoke detectors, the photoelectric detector and the ionization detector. All smoke detectors have two basic parts: a sensor and a very loud electronic horn. The sensor senses smoke and the horn awakens people.