What is the primary function of a PASS device on a firefighter's SCBA?

What is the primary function of a PASS device on a firefighter's SCBA?

• A. Monitor air quality and adjust SCBA settings automatically.
• B. Emit an alarm if the firefighter stops moving, signaling distress and prompting rescue.
• C. Record time since last rest period for safety logs.
• D. Emit a continuous chime for routine checks.

Answer: (D)

A PASS device is a safety alert that activates when a firefighter stops moving for a set period. It uses motion sensing to detect inactivity, and if no movement is detected, it emits a loud alarm to alert teammates and incident command that the wearer may be in trouble, prompting a rapid rescue. This emergency signal is its primary purpose, helping rescuers locate and assist a firefighter who may be incapacitated. The listed alternatives describe functions that aren’t what a PASS provides: monitoring air quality and automatically adjusting SCBA settings, logging rest periods for safety records, or emitting a continuous chime for routine checks. Those tasks belong to other systems or procedures, not to the PASS.

A PASS device is a safety alert that activates when a firefighter stops moving for a set period. It uses motion sensing to detect inactivity, and if no movement is detected, it emits a loud alarm to alert teammates and incident command that the wearer may be in trouble, prompting a rapid rescue. This emergency signal is its primary purpose, helping rescuers locate and assist a firefighter who may be incapacitated. The listed alternatives describe functions that aren’t what a PASS provides: monitoring air quality and automatically adjusting SCBA settings, logging rest periods for safety records, or emitting a continuous chime for routine checks. Those tasks belong to other systems or procedures, not to the PASS.