What must be displayed regarding the system's status on a Red label?

The indication "Inoperable, Impaired, or Fault" on a Red label is essential for conveying critical information regarding the status of the fire alarm system. This label serves as a warning sign that the system is not functioning correctly, which can pose significant risks in the event of a fire emergency. Displaying this status is crucial for ensuring that anyone interacting with the fire alarm system understands the current operational limitations and can take appropriate action, whether that be securing the area, initiating repairs, or informing the appropriate authorities.

Highlighting that the system is inoperable, impaired, or has a fault ensures that all personnel are aware of potential hazards and that the necessary precautions are taken. This is part of broader fire safety regulations that aim to reduce risk and ensure public safety by maintaining clear communication about a fire alarm system's functionality.