Name a common fire detection system.

Smoke detectors are a common fire detection system used in residential, commercial, and industrial settings. They function by sensing smoke particles in the air, which typically indicates the presence of fire. When smoke is detected, the smoke detector activates an alarm, alerting occupants to evacuate and authorities to respond if necessary.

The widespread use of smoke detectors has been pivotal in enhancing fire safety, as they can detect fires in their early stages, allowing for quicker response times and potentially saving lives. Their effectiveness is well-documented, making them a crucial component of any comprehensive fire safety plan.

In contrast, fire hydrants, emergency alarms, and fire doors serve different but important roles in overall fire safety and response measures. Fire hydrants provide a water supply for firefighting, emergency alarms alert occupants to evacuate in case of an emergency event, and fire doors help contain smoke and fire to specific areas, thereby enhancing overall safety but not functioning as detection systems.