The Siemens fire alarm system is composed of triggering devices, fire alarm devices, linkage output devices, and other auxiliary devices. It has the ability to convert physical quantities such as smoke, heat, and flames generated by combustion into electrical signals through fire detectors in the early stage of a fire, and transmit them to the fire alarm controller, while displaying the location and time of the fire.

Enabling people to detect fires in a timely manner and take effective measures to extinguish initial fires, minimizing the loss of life and property caused by fires, is a powerful tool for people to fight against fires.

The protection objects of the automatic fire alarm system are diverse in form, with different functions and varying scales. In order to facilitate early detection, early alarm, and daily maintenance and management, people generally divide the protection space of the installed fire automatic alarm system into several alarm areas. Each alarm area is further divided into several detection areas.

This can quickly and accurately determine the location of the fire in case of a fire, making it easier for relevant personnel to take effective measures. Therefore, the so-called alarm area is a part of the space where people divide the warning range of the automatic fire alarm system into fire zones or floors in the design, and is the basic unit for setting up regional fire alarm controllers.