I found this siren labeled "Carter" on gabetlamb's New York siren map. Here is a street view: https://www.google.com/maps/@40.6538838,-73.8280087,3a,15y,270.24h,100.29t/data=!3m6!1e1!3m4!1srCPekAdG5-xaCBAVd4nnvQ!2e0!7i16384!8i8192?entry=ttu It seems to be a horizontal siren of some sort. I...