历来的火灾报警器只能够感测到温度异常或者烟尘等之中的某一种着火现象。而日本却又研制出一种高性能的火灾报警器,它集现有各种类型的火灾报警器之功能于一身,可以感测到因发生火灾而造成的温度、烟尘、可燃气体以及火焰光线等异常,并及时发出警报,因而能更早期地发现火灾,减少火灾损失。该装置可在出现以下四种情况之中的任意一种时即立,自动报 Historically, fire alarms have been able to sense only one of the unusual phenomena of temperature anomalies or smoke and dust. However, Japan has developed a high-performance fire alarm which combines the functions of various types of fire alarms and can sense the temperature, soot, combustible gas and flame light caused by a fire And other anomalies, and promptly issued a warning, which can be found earlier in the fire and reduce fire losses. The device can appear in any of the following four situations, automatic report