国外开发的红外防盗报警器,能够在盗贼接近检测范围时发出“叮咚”的声音。它分检测和发音两部分,检测器装有热电型红外传感元件,对距其0.5～4m之间的人有反应,然后发射无线电波,发音器接收到无线电波后,发出报告声音。检测器方向还可以预置,比如可以通过调整检测器安装的位置和方向,达到 Foreign developed burglar alarm, burglar can be detected in the vicinity of the detection range issued a “ding dong” sound. It is divided into detection and pronunciation of two parts, the detector is equipped with pyroelectric infrared sensor, the distance between 0.5 ~ 4m of people react, and then launch radio waves, the radio receiver to receive radio waves, the sound of the report. The detector orientation can also be preset, for example by adjusting the position and orientation of the detector installation