The Optex SIP-3020/5 Superior Intelligent Outdoor PIR Detector with Anti-Masking / Anti-Rotation / Adjustable Creep Zone is designed for mid-range outdoor detection applications to trigger video transmission systems and PTZ camera control. The detector has an intelligent detection system that uses data from ambient environment, such as temperature and illuminance conditions to automatically adjust the sensitivity. It is also equipped with anti-rotation and anti-masking functions, which can detect vandalism or tampering with the unit. The SIP-3020/5 has an additional PIR detector on the bottom to cover the area just below the unit. This PIR detector on the bottom has an independent output separate from the main detector, while the detection angle in the main area of the SIP-3020/5 system can be adjusted to easily match a camera's field of view.