火灾探测器是组成各种火灾自动报警系统的重要组件，是消防报警系统的“感觉器官”。它的作用是监视环境中有没有火灾发生。一旦发生了火情，便将火灾的特征物理量如烟雾浓度、温度、气体和辐射光强等特征转换成电讯号，并向消防控制机发送及报警。 The fire detector is an important component of the fire alarm system. It is the "sensory organ" of the fire alarm system. Its role is to monitor whether there is a fire in the environment. In the event of fire, and will feature parameters such as smoke concentration and temperature of fire, gas, and the radiation intensity characteristics is converted into electrical signal, and send fire control machine and alarm. 火灾探测的型号名称往往很长，如：JY-G-YKS3A点型光电感烟火灾探测器，JTY-HS-YKS4150线型光束感烟火灾探测器等。火灾探测器的型号是如何确定的呢？ The name of the type of fire detection is usually long, such as the jy-g-yks3a light inductive smoke fire detector, jty-hs-yks4150 linear beam smoke detector and so on. How is the type of fire detector determined? 根据GAT227《火灾探测器产品型号编制方法》规定，火灾探测器产品型号由特征代号和规格代号两大部分组成。其中特征代号由类组型特征代号、传感器特征及传输方式代号构成，规格代号由厂家及产品代号和主参数及自带报警声响标志构成。 According to the GAT227 "method of product description of fire detector product", the fire detector product model is composed of two main characters, the characteristic code and the specification. Which features code from class group type codes, codes of sensor characteristics and transmission mode, specifications and code by manufacturer and the product code and the main parameters and built-in alarm sound marks.