Why must fire signals be distinct from other signals in a fire alarm system?

Fire signals must be distinct from other signals in a fire alarm system primarily so that different actions can be taken by occupants in response to the alert. When occupants clearly hear or see a specific fire alarm signal, they can immediately recognize it as a critical warning that requires urgent action, such as evacuating the building, activating fire suppression systems, or alerting emergency services.

Distinct fire signals are crucial for ensuring that there is no confusion between the signals used for various types of incidents, such as general notifications or routine alerts. Each distinct signal entails a specific response, which is vital for ensuring the safety of occupants in the event of a fire. Timely and appropriate reactions during a fire emergency can greatly influence the outcome, including minimizing risks to life and property. Thus, the clarity of life-safety signaling ensures that occupants can efficiently respond according to the situation at hand, maximizing their chance of safety during an emergency.