Place it right after the door knocking sound, at the moment the intruder is spotted, then follow it with the dun dun dun sound to underline the reveal before cutting to the reaction shot.
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This is a short, sharp burglar alarm sound lasting about 1.8 seconds, with a loud, piercing electronic tone that cuts through immediately. It feels urgent and tense, like a warning going off in a quiet room, and it works best as a sudden jolt that makes people look up and pay attention.