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Why It’s Probably a Speaker, Not a Smoke Detector
The giveaway is the cover. A flat circle of fine perforations, flush with the ceiling, is the classic look of a loudspeaker. A smoke detector is a different animal. It sits lower, usually has a small indicator light and a test button, and often a slotted housing rather than a fine mesh.
Plenty of rooms have both. That’s exactly why the guessing starts. You spot the smoke detector, then notice a second round thing nearby and wonder what it’s for.
