Sirens in the South Lee section of Lee, Massachusetts

[Allenorgan42099]

I hear that the silver Model 5/7 on top of the South Lee fire station is a 5/7T, not just a regular 5/7. Is that true? There is also another siren in South Lee, that sirs atop the Willow Mill, a half mile from the Model 5/7T. The second siren is light-blue in color and I believe it is a Model 3 but I am not 100 percent sure.