Federal Signal Modulator

A Drawn Yellow Federal Signal Modulator.

Modulator Speaker Arrays are electronic warning devices produced by Federal Signal Corporation that are used to alert the public about tornadoes, severe weather, earthquakes,fires, lahars or any other disaster. They are identified mostly Edit
Federal Signal Modulator-0

A Federal Signal Moulator ll

by their distinctive stacked "flying saucer" design. Edit

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.