PIR Motion Sensor Activated Sound Player Speaker with USB Cable, Download Your own MP3 Audio Files to Play Speech, Music or Sound Effects (White) auspowers_batchfour The replacement blade's cartridge design

The replacement blade's cartridge design allows user to change or replace the blade without ever touching the sharp edge

more economical

once pay only get one

pls attach it follow the mannual book

for Pneumatic Tool

PIR Motion Sensor Activated Sound Player Speaker with USB Cable, Download Your own MP3 Audio Files to Play Speech, Music or Sound Effects (White) auspowers_batchfour The replacement blade's cartridge designPIR Motion Sensor Activated Sound Player Speaker with USB Cable, Download Your own MP3 Audio Files to Play Speech, Music or Sound Effects (White) Product Features plastic 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 )