What is the main distinction of a manually actuated fire alarm system?

A manually actuated fire alarm system is characterized by its reliance on human activation. This means that the system is designed for individuals to initiate an alarm response by using manual pull stations installed throughout a facility. The system does not automatically detect fire, smoke, or heat, which differentiates it from other types of alarm systems that have automatic features.

The option referring to the automatic activation of a sprinkler system is not relevant to the nature of manually actuated systems, as they do not connect directly to sprinkler operations unless designed with an integrated system for that purpose.

The option stating that the system can only be triggered by smoke is incorrect, as manually actuated systems do not depend solely on smoke detection. They require a person to physically act to alert others of a fire instead of relying on automatic detection.

The requirement for electricity to function does not specifically define a manually actuated system, as many systems can include battery backup or work within certain parameters without constant power. The core distinction lies in the need for human intervention to activate the alarm, thus emphasizing the role of people in fire safety protocols.