What is the main purpose of the PASS (Personal Alert Safety System) device?

The main purpose of the PASS (Personal Alert Safety System) device is to alert rescuers if the user becomes immobile. This device is designed to enhance safety for individuals using self-contained breathing apparatus (SCBA) in hazardous environments, such as firefighting or rescue operations.

When a firefighter or rescue worker is on the move, the PASS device is activated and monitors movement. If it detects that a person has been motionless for a predetermined period, it emits a loud alarm, signaling that the individual may be in distress or incapacitated. This feature is crucial for ensuring that responders can quickly locate and provide assistance to those who might be in life-threatening situations.

In contrast, monitoring the pressure of the SCBA, connecting to emergency services, and providing communication within a building represent different functions that do not align with the primary role of the PASS device. The focus of the PASS system is solely on alerting others to potential danger regarding the user's activity levels.