Which device is included in fire alarm early warning systems?

Ionization smoke detectors are indeed a crucial component of fire alarm early warning systems. These devices are designed to detect smoke particles created by combustion and provide an early indication of a fire's presence. They work by using a small amount of radioactive material to create an electric current; when smoke enters the sensing chamber, it disrupts the current, triggering the alarm. This rapid detection ability is essential for effective fire response, enabling individuals to evacuate and for emergency services to respond promptly.

In the context of fire safety, having a reliable early warning system significantly enhances the chances of preventing fire-related injuries and damage by allowing more time for evacuation and firefighting efforts. Other devices mentioned, while valuable in different contexts, do not directly function as early fire detection systems in the same way that ionization smoke detectors do.