The purpose of a PASS device is to:

The purpose of a PASS device is to:

• A. Sound an alarm if a firefighter is motionless for a set period.
• B. Warn Firefighters when their air supply is low
• C. Sound an alarm if certain fire or asphyxiate gases are detected
• D. Keep Track of elapsed time in deteriorating conditions

Answer: (A)

The main idea is to provide a rapid distress signal when a firefighter cannot move. A PASS device watches for motion, and if there’s no movement for a preset period, it automatically sounds a loud alarm to alert teammates that the firefighter may be in trouble. This enables quick location and rescue in the hazardous, low-visibility environments firefighters work in. This function is not about monitoring air supply, gas detection, or keeping time. Air-supply alarms are part of the SCBA system, not the PASS, and gas detectors serve to warn about specific contaminants, not to signal immobility. Timekeeping isn’t the PASS’s purpose either, even though timing can be important in operations.

The main idea is to provide a rapid distress signal when a firefighter cannot move. A PASS device watches for motion, and if there’s no movement for a preset period, it automatically sounds a loud alarm to alert teammates that the firefighter may be in trouble. This enables quick location and rescue in the hazardous, low-visibility environments firefighters work in.

This function is not about monitoring air supply, gas detection, or keeping time. Air-supply alarms are part of the SCBA system, not the PASS, and gas detectors serve to warn about specific contaminants, not to signal immobility. Timekeeping isn’t the PASS’s purpose either, even though timing can be important in operations.