What happens when a PASS device is activated?

When a Personal Alert Safety System (PASS) device is activated, it emits an audible alarm. This alarm is designed to alert nearby personnel to the presence of a downed or incapacitated firefighter or other individual using the SCBA. The loud sound serves as a critical safety measure, ensuring that others can respond quickly to assist the person in distress.

The audible alarm function is vital because it creates a sense of urgency and prompts immediate action, which can be crucial in emergency situations. Other features of a PASS device may include visual markers or signals, but the primary and most critical response when activated is the audible alarm, which resonates in environments where visibility may be compromised.