Which pressure level activates the Vibralert in the EBSS system?

The Vibralert in the Emergency Breathing Support System (EBSS) is designed to warn the user when the air supply is getting low. It serves as an important safety feature that activates when the cylinder pressure falls below 1825 psi. This threshold is set to ensure that the user is notified before the air supply becomes critically low, allowing for timely action to either exit the hazardous environment or to connect to an alternate air supply. This early warning system maximizes the safety of the person using the self-contained breathing apparatus (SCBA) by preventing unexpected depletion of air.