1、　　被动式热释电红外探测感应，它是利用热释电红外传感器检测人体红外信号来完成防盗监测的。当有人进入传感器的监测区域时，报警装置通电工作，发出报警声。-1, passive pyroelectric infrared detection sensors, it is the use of pyroelectric infrared sensors to detect infrared signals the body to complete the security monitoring. When someone enters the sensor' s monitoring area, the alarm device power work, an alarm sound.