There are many models and styles of fire alarm controllers in firefighting equipment. Generally speaking, according to the structural form of fire alarm controllers, they can be divided into wall mounted, cabinet mounted, and piano mounted. Below is a detailed introduction to each type of Siemens fire alarm controller.

(1) Wall mounted fire alarm controller: Its number of connected detector circuits is correspondingly less, and the control function is relatively simple. This structure is commonly used for fire alarm controllers in general areas.

(2) Qin desktop fire alarm controller: It has a large number of connected detector circuits, complex linkage control, and convenient operation and use. It is generally common in centralized fire alarm controllers. The style of the Qin desktop fire alarm controller is quite beautiful.

(3) Cabinet type fire alarm controller: It is basically the same as the piano type fire alarm controller, and the internal circuit structure is mostly designed as a combination of plug-in boards, which is easy to expand its functions. By the way, according to the design and usage requirements of automatic fire alarm controllers, they can be divided into regional fire alarm controllers, centralized fire alarm controllers, and universal fire alarm controllers. According to the requirements of the usage environment, it can be further divided into land-based fire alarm controllers and ship-based fire alarm controllers.

In order to reduce false alarms, facilitate installation and debugging, reduce installation and maintenance costs, reduce the number of connection lines, and timely and accurately know the exact location (part number) of the fire detector that emits an alarm, modern fire alarm controllers generally use pulse coding control systems, forming a few wire bus structure, with microcomputers or single-chip computers as the main control core unit, accompanied by memory and digital interface devices. Therefore, modern alarm controllers have strong anti-interference ability and flexible adaptability.

This type of area alarm controller continuously sends coding pulse signals to the coding detectors at each detection location. When the signal matches the detector code of a certain part, the detector responds and returns information to determine whether the part is normal. If it is normal, the host (CPU) will continue to inspect the detectors in other parts; If it is abnormal, determine whether it is a fault signal or a fire alarm signal, issue corresponding sound and light alarm signals, and transmit the alarm signal to the centralized alarm controller.