Fire alarm systems, in Green Bay, are automatically or manually actuated devices that detect the unwanted presence of fire by monitoring combustion-induced environmental changes. These systems consist of equipment for notifying the building occupants to vacate in case of an emergency as well as prevent spreading of fire & smoke. The fundamental configuration of such a fire alarm system is composed of a Fire alarm control panel, Primary Power supply, Secondary (backup) Power supplies, Initiating Devices, Notification appliances & Building Safety Interfaces. The fire alarm systems in Green Bay are categorized as- L, P& M. L category systems aim at protecting life, P category systems are meant for protecting buildings, while manual systems are designated as M.