Model 5

C2 1/2
[[File:{{{image}}}|200px]]
Company	Federal Signal Corporation
Produced	1929-1987, The Model 5T variant was first available in 1954 and ended somewhere in 1982.
Type	Electromechanical
Sound output	113 (Single Tone) 108 (Dual Tone)
Documentation	Manual

The C2 1/2 or commonly known as Model 5 was a 5 or 3 horsepower, mechanical, omnidirectional siren produced by Federal Signal Corporation part of the Fedelcode lineup. It's essentially the smaller version of the C3 1/2 or commonly known as Model 7. The rotor is 15 inches in diameter and shares the same rotor as the 12-port side of the 2T22 siren. There are two variant of the Model 5: the Model 5 which was available in 12 and 8 port single tone, and Model 5T which is 9/12 port dual tone. The siren was housed in a very simple enclosure that resembles an air vent found on building roofs.