A smoke detector is a safety device that senses smoke particles in the air and triggers an alarm to warn occupants of a potential fire. It uses technologies such as optical (photoelectric) or ionization sensing to detect different types of smoke. When smoke is detected, the device emits a loud alarm, allowing people to take immediate action and evacuate safely.
Smoke detectors are designed to rely on multiple sensors to differentiate between normal smoke and smoke produced by a fire breakout. They are commonly installed in homes, offices, hotels, factories, and commercial buildings. They can be designed to take prompt action by switching off the HVAC fan system and ventilation system to prevent spreading smoke throughout the building.
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