The device works by emitting an ultra-high frequency blast (around 1920 kHz) that teenagers or people under approximately 20 are susceptible to and find uncomfortable. If it was increased, it could kill with the destruction of organs and the contraction of muscle tissue, to include the heart.
Sound in that range doesn't stun. It destroys.
78 posted on 06/20/2019 9:05:28 AM PDT by Buckeye McFrog
(Patrick Henry would have been an anti-vaxxer.)