Motion sensor audio player ' s detection range is up to 13ft(4m), 120 view angle. It will trigger the sound remind you when someone or animals enter and move in the monitored area. Music files can be customized, Download MP3 or WAV music files by computer. (Recommend the Windows 7 ) MP3 audio files playback, single track or multiply play.This product only supports USB data cable to replace voice, not TF card.The card slot is for decoration only. Indoor Festival music decorations , entrance door greeting, driving animals soundbox or alert. Install front doors, window frames, driveways, and anywhere you want to be playing music to motion. Recommend install about 5 feet above the ground and 3ft far from the door-frame. Customize your chimes, sounds as you wish Included mounting screws, ball mounting accessories, USB cable. Operates with 3 AAA batteries (Not Included) and optional to be plugged in DC5V (USB Cable Included) for external power supply.Feel free to contact us by e-mail directly, happy to help with you.