Product Features: 1. Health product, low consumption, without any kind of radiation. 2. Good resistance to electromagnetic interference, will not false alarm under the influence of phones. 3. Exquisite appearance design with high stealthiness. 4. Through the infrared detection technology, after sensing the thieves in the front of the three-dimensional space, send an alarm signal to the alarm host, the host sent a high-decibel alarm to frighten the thieves immediately, and secretly notify the user through text messages or calls. 5.