In a fire alarm system, what is the role of initiating devices?

Initiating devices in a fire alarm system play a critical role by detecting the presence of smoke, heat, or flames and subsequently sending signals to activate alarms and notifications. These devices serve as the first line of defense in identifying a potential fire situation, enabling an immediate response to alert occupants and emergency services. By doing so, they help to ensure the safety of individuals in the vicinity and facilitate an effective evacuation strategy.

Other choices do not accurately describe the function of initiating devices. While storing emergency plans or collecting data for investigations may be part of a broader fire safety or management system, these tasks are not the primary functions of initiating devices. Similarly, extinguishing fires is typically the role of suppression systems, not alarm systems. Hence, activating alarms and notifications is the essential and defining role of initiating devices within a fire alarm system.