Hubbell Building Automation LightHAWK LHUSS0I Digital Ultrasonic Occupancy Sensor without Manual Override, Ivory Utilizes ultrasonic (US) technology for unequaled occupancy detection and false trip immunity Built-in photocell increases energy savings by preventing the lights from turning on when there is sufficient natural light IntellADAPT provides true maintenance free "Install and forget" operation Coverage: 180-Degrees; 400-Square Feet Dimensions: 4.2 x 1.8 x 2.1-Inch