This is a siren that is 2 sirens at once. ACA made the Superbanshee from 1967 to 1973. Soundmaster (who sold surplus ACA sirens) decided to take Superbanshee designs and copy them to make their own siren, the Soundmaster115. Soundmaster was sued for this in about 1975. The only difference between the two is that Soundmaster fitted the 115 with coding dampers. #airraid #fire #outdoor #siren #tornado #warning
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