OSC10-U0W Low Voltage Occupancy Sensor, 24 VDC, Ultrasonic Sensor, 1000 sq-ft Coverage, 360 deg, Ceiling Mount, LED Lamp, 40 kHz Response, Wired, Automatic ON/OFF Control Output, Ceiling Mount, 0 to 40 deg C, Plastic, Off-White, 4.2 in Dia x 1.34 in D