Fire alarm system: the fire alarm control panel (facp) shall be the central processing unit of the system, receiving and analyzing signals from fire sensors, providing audible and visual information to the user, initiating automatic alarm response sequences and providing the means by which the user interacts with the system. The system is categorized as addressable and conventional systems. 1)addressable fire alarm system provides exact location and information of activated sensor. 2)conventional fire alarm system provides zones vise information of activated sensors.