What is the system pressure level indicated by a red background screen color?

The system pressure level indicated by a red background screen color signifies a critical state in the SCBA’s operation. Specifically, a red background indicates that the air supply is low, correlating with a pressure level lower than 35%. This visual warning is particularly important for ensuring the safety and readiness of the user, as it prompts immediate action to either evacuate from the hazardous area or to switch to an alternate air source.

Recognizing the importance of this visual cue helps users maintain awareness of their air supply status, ensuring they are prepared for safe exit during operations.