Intelligent Motion Sensor Detector Security Systems Pet Immunity Dual PIR Motion Sensor Outdoor Microwave Motion Detector Security Systems,DRO micro radar+2 independent dual PIR detection technology. Adopts multi-grades intelligent signal processing software, full analysis and processing of all kinds of false alarms. Adopts micro power-consumption 8 digits CMOS single chip control. Professional grade IP-65 water-proof design, fit for fully outdoor installation Double layer filtering system, anti strong light interference.