Here are two sirens in Ontario, Canada that I have filmed that are/were sick
Sebringville, ON Fire Dept Canadian Model 2-3Z
https://www.youtube.com/watch?v=MtUsjz5rKdE
Ilderton, ON Fire Dept Federal Enterprises Model 2
https://www.youtube.com/watch?v=s7b2CcGgg9w&t