Occupancy sensors for lighting control are devices that detect motion in a room or space and turn lights on and off accordingly. This technology is becoming increasingly popular in many businesses, as it can save energy and help reduce electricity bills. The definition of an occupancy sensor is a device that senses the presence of people in an area and then triggers an action. The action can be anything from turning the lights on to adjusting the temperature. Occupancy sensors can come in a variety of forms, including infrared sensors, ultrasonic sensors, and dual technology sensors. Infrared sensors detect movement by detecting infrared radiation emitted by warm-blooded bodies. Ultrasonic sensors detect movement by detecting sound waves. Dual technology sensors combine both infrared and ultrasonic sensing technology to provide maximum accuracy in detection. Occupancy sensors are able to detect people in a variety of ways, including through body heat, the movement of clothing, or even the sound of a voice. By using occupancy sensors, businesses can save energy by only turning on lights