The Stuttertone® quickly became the gold standard across the globe, trusted by fire departments, rescue fleets, and law enforcement agencies who needed a signal that cut through traffic and command attention. Its unmistakable Stuttertone® and powerful cadence is not only iconic but lifesaving.

Since 1936 Grover Products Co. has produced its line of emergency Stuttertone air horns like the Grover #1510 and #1512 and over that...