Leviton ODC0S-I7W Ceiling Mount Self-Contained Occupancy Sensor, 2700VA FL, 277VAC 60Hz, PIR, 360 Degree, 530 sq. ft. Coverage, White Sensor and switching relay in one unit 360 degrees field of view with approximately 530 sq. ft. of coverage when mounted at 8 ft. Adjustable Delayed OFF time setting between 20 seconds and 15 minutes allows custom adjustment for maximum savings LED indicator light flashes when sensor detects motion, to verify power placement and function of sensor at installation Segmented Fresnel lens contains 79 segments for optimum sensitivity and detection performance