May 2017 Columbia Heights siren Ambiance Test Federal Signal 2001-130

[@bkriegel95]

That helicopter that flew overhead sounded A LOT like Mayo 1

[@garyhisgun4996]

The Minneapolis Whelen Vortexes sure do carry far with their sound still wish Minneapolis kept their contract with Federal instead of going with Whelen since there was already a Federal Signal Siren System already in place but I wonder why does Decibel Level matter when picking a new battery backup system for a big city like Minneapolis did with it's system