In a fire alarm system, which device is responsible for monitoring and reporting smoke levels?

The smoke detector is specifically designed to monitor and report on smoke levels in the environment where it is installed. It utilizes various technologies, such as photoelectric or ionization methods, to detect the presence of smoke particles in the air. When smoke is present, the detector activates an alarm signal, notifying occupants of a potential fire hazard. This immediate reporting capability is vital for early fire detection, allowing for timely evacuations and responses.

In contrast, other devices listed have different functions; for example, heat detectors monitor temperature changes but do not directly assess smoke levels. Pull stations are manual devices that allow individuals to initiate an alarm in case of fire, and stationary alarms typically refer to the overall sound or notification system rather than a specific detection device. Therefore, the smoke detector stands out as the device dedicated solely to monitoring smoke levels in a fire alarm system.