Leviton ODS10-ID Decora 120/277-Volt Wall Switch Occupancy Sensor, White Convenient push-button provides manual on/off light switching at any time 180-degree field of view provides approximately 2,100 square feet of coverage Segmented Fresnel lens provides optimum sensitivity and performance Horizontal field of view may be adjusted between 180 degrees and 32 degrees of arc Ambient light override can be set to prevent activation if sufficient ambient light is available