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Smoke Detector

Smoke detectors are devices that detect smoke particles and alert people to the presence of a fire. They are important safety devices that can save lives by providing early warning of a fire. Smoke detectors are typically installed in homes, businesses, and public buildings, and are required by law in many jurisdictions.

There are several types of smoke detectors, including ionization, photoelectric, and dual-sensor detectors. Ionization detectors use a small amount of radioactive material to ionize the air in a chamber. When smoke enters the chamber, it disrupts the ionization process and triggers the alarm. Photoelectric detectors use a beam of light to detect smoke particles. When smoke enters the chamber, it scatters the light and triggers the alarm. Dual-sensor detectors combine both ionization and photoelectric technologies.

Smoke detectors may be powered by batteries or by the building's electrical system. Battery-powered smoke detectors are common in homes, while commercial buildings often use hardwired smoke detectors. Some smoke detectors also include features such as carbon monoxide detection or wireless connectivity to alert emergency services.

Regular testing and maintenance of smoke detectors are important to ensure they are functioning properly. Batteries should be replaced regularly and the units should be cleaned to remove dust and debris that can interfere with their operation.

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