The sound comes from the Taser 7, a conducted energy weapon made by Axon and widely adopted by law enforcement agencies in the United States from 2018 onward. Its shut-off click and electronic tone are heard at the end of countless bodycam recordings shared online, which helped the clip spread beyond training videos into meme edits and gaming content. Creators keep using it as shorthand for authority, de-escalation, or a sudden stop, because even listeners who have never handled the device recognize the sequence from viral police footage.