BMA stands for Brandmeldeanlage, the standard German term for an automatic fire detection system installed in public and commercial buildings across Germany, Austria and Switzerland. When smoke or heat detectors trigger, the system sounds a distinctive electronic warning tone through wall-mounted alarm sounders to start evacuation. Clips of the tone circulate online as a recognisable shorthand for a German fire alarm, separate from American bell alarms or UK siren tones. Editors borrow it for drill recreations, building tours and parody evacuations where the specific European sound matters.