TOPGREENER TSOS5-W Passive Infrared In-Wall Motion Sensor Light Switch, you can enjoy great savings and convenience with lighting control. When you put the slide switch button to AUTO mode, TSOS5 PIR motion sensor will detect motion and turn on load such as a lights, fans, motors, or heaters automatically; and turn off the load when no motion is sensed for preset delay time. Variable delay time between 15 seconds, 10 minutes, 20 minutes and 30 minutes. Passive Infrared, PIR sensor detect occupancy by sensing the difference between heat emitted from the human body in motion and background space. This occupancy sensor has a maximum coverage area up to 707 sq. ft., 180-degree field of view; sensitivity level is adjustable in 4 positions from 30% to 100%. To provide adequate coverage with-in a space, motion activated sensors utilize a unique Fresnel lens which divides the coverage area into zones, thus enhancing the detection of small movement. The TOPGREENER TDODS5-010 is a motion sensor switch with dimming made specifically for low voltage lighting. The switch automatically turns light on and off based on the motion detected in a room. Dimming in addition to motion detection, helps you save more energy and gives you more control over your lighting. The sensor features two user modes: occupancy and vacancy. Occupancy mode automatically turns lights on when motion is detected and automatically turns them off when no motion is detected for the selected time delay. Vacancy mode requires the user to manually turn on the lights, and lights will automatically turn off when no motion has been detected for the set time delay. Vacancy mode is more energy saving due to the manual on operation. This low voltage sensor dimmer uses the 0-10V to adjust your compatible lighting. The dimming function gradually fades and brightens lighting for a smooth dimming experience. This device is CA Title 20 and 24 compliant. It is UL listed, compatible with 120-277 VAC, and works with up to 800