|Company||Federal Signal Corporation|
|Produced||? - Mid 1950's|
|Sound output||? dBc at 100 feet|
The Model 3 was a 3 horse power, mechanical, omni-directional siren produced by Federal Signal Corporation. It's essentially the smaller version of the Model 5. The rotor is 12 inches in diameter coming in 2 different port ratios: 12 and 8 port single tone. The siren was housed in a very simple enclosure that resembles an air vent found on building roofs.