There is no documented origin for Alarm 301 beyond user soundboards, where numbered alarm clips are uploaded for quick reuse in edits. It circulates the way most meme alarms do: short, loud and instantly readable as a warning. Editors drop it over fails, fake emergencies and countdown gags on short-form video, often cutting it against silence for a bigger punch. Because it sounds close to a game-show buzzer and doubles as a wrong-answer sting, and that flexibility keeps it in steady rotation.