ACA Cyclone
The ACA Cyclone looks similar to a Screamer. The first known Cyclone appeared in an ACA ad from 1968, the Alpha Cyclone. This siren has no known existing models. The Cyclone 120 had a 120db rating at 100 ft and Cyclone 125 125db. The Cyclone 120 was sold from 1970 to 1980, the 125 was sold from 1980 to 1994. This was one of the few ACA sirens with built-in dampeners.
Photos
ACA Cyclone 125