Category:Modulator II sirens

**Modulator II**
	series of outdoor warning siren models manufactured by Federal Signal Corporation
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Instance of	model series (civil defense siren model);
Subclass of	omnidirectional siren; electronic siren;
Manufacturer	Federal Signal Corporation;
Authority file
	Q77383807;
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Subcategories

This category has the following 2 subcategories, out of 2 total.