Which component of a fire alarm system detects smoke?

The component of a fire alarm system that specifically detects smoke is the smoke detector. Smoke detectors are designed to sense the presence of smoke particles in the air, which is often indicative of a fire. They utilize various technologies, such as ionization or photoelectric sensing, to identify smoke. When smoke is detected, the smoke detector activates the fire alarm system, alerting occupants of a potential fire situation.

In contrast, the control panel acts as the central hub of the fire alarm system, receiving signals from various detectors and initiating responses. Heat detectors, while they play an essential role in fire detection, operate differently by monitoring changes in temperature rather than detecting smoke directly. Notification appliances, such as alarms or strobe lights, are responsible for alerting people to the danger but do not detect fire or smoke themselves.