Place it at the exact beat where the mistake or danger is revealed, then follow it with a shocked reaction sound before cutting to the aftermath. For a warning sequence, open with the smoke detector beep and let this clip take over as the main alert.
About this sound
This is a short, harsh alarm blast, lasting about seven seconds, with a sharp, high-pitched tone like an emergency warning. It feels urgent, jarring and chaotic, and it turns a calm moment tense in an instant. It is a generic alarm effect used widely online, rather than a line from a film or show.