A broken CD or DVD or other type of optical disc is a serious problem and one that will likely lead to loss of information stored on this media. A broken optical disc refers to a disc that has split into two or more pieces or perhaps a disc simply missing one piece.
A motion detector is a device that detects moving objects, particularly people. A motion detector is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area.
Bookmark with: The three most common motion sensors used in technology today are PIR, Ultrasonic and Radar. Ultrasonic uses sound to detect motion and Radar detects pulses. The third, most commonly used, (and also used in our Mr. Beams Motion Sensing LEDs) is PIR motion sensors, which detect heat. If you live almost anywhere in the US, it's likely you have experienced major heat waves this summer and a few may notice a slight change in the range of your Mr. Beams Motion Sensor Light.