Category:Warning sirens
From Wikimedia Commons, the free media repository
Deutsch: Eine Sirene ist eine Einrichtung zur akustischen Alarmierung oder Warnung, in der Regel durch einen charakteristischen an- und abschwellenden Heulton.
English: A civil defense siren (also referred to as an air raid siren, tornado siren, or outdoor warning siren) is a mechanical device (modern day sirens are electrically-powered) for generating sound to provide warning of approaching danger and sometimes to indicate when the danger has passed.
Media in category "Warning sirens"
The following 34 files are in this category, out of 34 total.
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