Bosch ISC-BPR2-W12 Blue Line Gen2 PIR Motion Detector, Provides 40 ft x 40 ft Coverage, High-Impact ABS Plastic, Dynamic Temperature Compensation, Pet Friendly, Self-Locking Enclosure, White Wall to Wall coverage, Superior catch performance within 40 ft x 40 ft coverage area Dynamic Temperature Compensation, Intelligently adjusts its sensitivity so that it can identify human intruders at virtually any temperature An improved lookdown zone and coverage range of 40 ft x 40 ft provide wall-to-wall coverage First Step Processing (FSP) almost instantly responds to human targets without producing false alarms from other sources Optics and electronics are assembled into the front enclosure and sealed with a protective cover