What does a low air alarm do on SCBA?

The primary function of a low air alarm on a Self-Contained Breathing Apparatus (SCBA) is to signal when the air supply is running low. This is a vital safety feature, as it provides the wearer with an audible alert that their remaining air supply has reached a predetermined level, allowing them to take appropriate action.

It is designed to ensure that users remain aware of their air supply status, especially in hazardous environments where visibility and communication may be compromised. By offering a timely warning, the low air alarm prompts the user to either exit the hazardous area or take measures to replenish their air supply, thereby reducing the risk of air depletion and ensuring their safety.

This feature is critical for the effective and safe operation of SCBA, making it an essential aspect of training and usage in environments requiring respiration protection.