Fire Alarm detection system is a combination of fire alarm control equipment and fire alarm indicating equipment. Fire Detection System detects the fire by means of sensing smoke, sudden rise in the temperature with electronic equipments; logically and hence produce output in the form of alarm by energizing the audio / visual devices. All components and interconnections between every fire alarm initiation point (call points and detectors) and every fire alarm device. Alarm receiving centre is a permanently manned centre, usually provided by a commercial organisation, the staff of which, upon receipt of a fire signal notify the fire service.