The Wind Point Light Station used fog signals from its earliest days, first with horns powered by a steam engine that forced compressed air through the horn. In 1880, two separate wooden structures housed two fog horns, and in 1900 they were replaced by the current brick foghorn building with twin compressed air horns. Its distinctive low-frequency two-tone sound, whoo-ahhh, came from an organ stop used on some Wurlitzer organs. After steam engines, the horns were powered by hot bulb engines, then by electricity from 1924 until they were decommissioned in 1964. The signal could be heard 10 miles out on Lake Michigan, and although the horns are no longer in use, the foghorn resonators remain visible on the building's eastern face. A foghorn still operates on the Racine Reef Light two miles east of the Racine Harbor entrance.