In modern years, fire alarm system...

In modern years, fire alarm systems have assumed a greater part in building and fire service operations during a fire crisis
Predecessors of contemporary fire, alarm bodys were designed to perform a single function: signal the ne to evacuate. according to contrast, today's alarm bodys have evolved to include interfaces with other building bodys including ventilation/fan control, smoke management, elevator recall, fire suppression and information networks.
Meanwhile, fire alarm restrain panels have moved from simple relay logic to solid state circuits and now to