At what duration of motionlessness does a PASS alarm activate?

A Personal Alert Safety System (PASS) alarm is a critical safety device used by firefighters to ensure their safety in hazardous environments. The activation of the PASS alarm at 30 seconds of motionlessness serves a vital purpose.

The 30-second duration is designed to balance the need for prompt alerts while minimizing false alarms. This duration allows firefighters who are temporarily stationary—such as when taking cover or undergoing a brief evaluation—to avoid unnecessary activation of the alarm. However, if a firefighter does not move for 30 seconds, it is likely that they may be in distress or incapacitated, prompting the alarm to activate. This activation draws attention to the individual, facilitating a quicker response from fellow firefighters and improving the chances of rescue.

Knowing this standard helps members of the firefighting team understand the critical role of the PASS device in their safety protocol and reinforces the importance of remaining aware of their surroundings while operating in dangerous situations.