USB motion sensor sound module, downlaod the sound from your PC, and motion activated to play the sound.
Specification:
1. Size: 65*59*40mm;
2. Operated by AAA battery*3pcs
3. Speaker: diameter 40mm;
4. Micro USB port to download the sond file to module
5. Memory size: 1G;
6. Motion sensor activated module
7. When somebody go through in front of sensor, it would be activated to play the sound.