Sound grenades are a crime prevention device which has been documented to prevent muggings and reduce campus crime rates. The tiny non-violent device is a 120-decibel alarm the size of a USB drive. The device deters preventable crimes across the country on a regular basis, and universities from coast to coast have been handing the device to students.

Please see the video below for more information.
Robocopp SOS Personal Alarm

 
 
 
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