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YouTubeS.E.R. Safety
Tornado/Fire Alarms doing Alternate Wail! | Wheelock & Fire-Lite System Test 22
Today's system test on the voice evacuation fire alarm demonstration board has the hazard alarm programmed to an alternate wail audio file from a Federal Signal Modulator II siren. Downtown Chicago, IL is known in the siren community for its use of the alternate wail melody on their outdoor tornado/severe weather warning sirens. Alternate wail ...
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