Occupancy Sensor, Sensing Technology Passive Infrared (PIR)/Ultrasonic, Operating Voltage 24V DC, Maximum Coverage Area 1,000 sq ft, Maximum Mounting Height 12 ft, Load Rating @ 120V AC Dependent on Control Unit Rating, Communication Method Hard Wired, Color White, Includes (1) 360 Degrees Perforated Mask, (1) Half Mask, (1) Plastic Washer, (1) Threaded Rod and Hex Nut, (2) #8-32 Washer and Nut, (2) #8-32x1-1/2 in Screw, (2) #8-32x1/2 in Screw, Sensor Operation Occupancy, Photocell