I am responding from my alternate account (forgot the password to "thehurricane130"). I recently visited the siren and the power lines must've blew down or were removed since that google maps photo was taken.
I found this low mounted model 7 in a small town so I got this Picture of the tag. The tag claims the siren is a model 7, even though it is clearly dual tone. Is that normal? I also wanted a date code out of the serial number.