The Professional Series PIR Detector ISC-PPR1-W16 is exceptionally suited for commercial indoor applications. The self-locking two-piece enclosure, built-in two-way bubble level, flexible mounting height, and three optional mounting brackets simplify installation and reduce service time. Sensor data fusion technology ensures that the detector sends alarm conditions based on precise information. Tri-focus optics technology eliminates coverage gaps and responds efficiently to intruders. The powerful combination of unique features in the Professional Series delivers superior catch performance and virtually eliminates false alarms.