What indication is required upon actuation of a fixed automatic fire extinguishing system?

Upon actuation of a fixed automatic fire extinguishing system, it is essential to have an indication method that functions effectively to alert personnel in the vicinity. The requirement for an audible alarm or visual indicator serves multiple purposes: it not only notifies individuals that the system has activated due to a potential fire but also initiates emergency procedures and ensures that the necessary response measures are taken without delay.

The combination of both audible and visual alarms enhances safety by accommodating varying situations, such as environments with elevated noise levels or where individuals might not glimpse visual alerts. This layered notification ensures better preparedness and response capabilities, thus contributing to the overall effectiveness of the fire safety system.

While other options may suggest limitations either by focusing solely on one type of indication or proposing that no indication is necessary, they do not align with the established standards that prioritize comprehensive alerts to safeguard lives and property effectively.