Our active intrusion infrared wall is a human-based anti-theft alarm system of high intelligence, integrating the c.p.u micro-processing chip, the voice chip and the calibration indicating circuit. The product can give out the high-decibel live sound and the red alarm indicator, which can fully threaten thieves. With the application of the Fresnel optical lens, it is capable of super far detection. The product can be applied to all the places where peripheral arming is needed, such as walls, doors and windows, balconies, parking lots and so on.