The MedeaWiz MSA-B Motion Sensor is a PIR motion-detecting device designed to trigger media playback on a MedeaWiz Sprite or Sprite 4K media player when motion is detected. It features a Stealth Black color with mounting holes, making it easy to install and use. The sensor is pre-wired with the correct cable to plug into the Sprite, Sprite 4K, Hydra I/O expander, and the SS-38 Serial Splitter. When connecting to a Sprite, put two or more of your files on a SD or USB drive and name them 000 and 001. Then continue with 002, 003, and etc. if you want more trigger files. The Sprite will begin looping the file named 000 when the power is applied. When the MSA-B motion sensor "sees" someone move in front of it, the Sprite will play the first trigger file named 001. When the file 001 is over, the Sprite will again loop the file named 000 and wait for the next motion trigger. Each new trigger will play the next file number. After the last trigger file, the sequence begins with file 001 again.