The ISC-PPR1-W16 Professional Series PIR Detector is exceptionally suited for commercial indoor applications. Sensor data fusion technology ensures that the detector sends alarm conditions based on precise information. Tri-focus optics eliminate coverage gaps and respond efficiently to intruders. The powerful combination of unique features in the Professional Series delivers superior catch performance and virtually eliminates false alarms. The self-locking two-piece enclosure, built-in bubble level, flexible mounting height, and three optional mounting brackets simplify installation and reduce service time. 18 m x 25 m (60 ft x 80 ft) standard coverage; 8 m x 10 m (25 ft x 33 ft) selectable short range coverage Sensor data fusion technology Tri-focus optics technology Active white light suppression Dynamic temperature compensation