This is an excellent performance of outdoor use passive infrared composite intrusion detector with solar charging technology. The 8-bit high-speed microprocessor is used for direct calculation and analysis of the intrusion signal, bipolar detection, filtering technique of multiple mixed light direct adjustment of digital signal sensitivity technology, etc., which can effectively filter out a variety of factors that may cause false positives, and completely seal the plastic structure design, which can avoid sunlight, rain, dust, insects, typhoons and other common outdoor interference factors. This detector has a variety of advanced technology and good stability, can give you the best outdoor safety protection.