Harry O. Ricci Siren & Signal, Inc.

HOR was a siren company based in New York that built the Super Sirex and Siro-drone sirens. There are very few active units in the United States. The Super Sirex came in either 25, 40, or 50 horsepower. They either had port ratios of 9/9, 10/10, and 7/10. They were available in both dual and single head models, with or without a rotator. The Siro-Drone came in 2,5,7, and 10 horsepower. Its port ratios were 9,10, and 12 port. HOR also had a vertical siren, similar to the Super Sirex, called the Siro-Drone, of which there are three known to be active in Massapequa, New York.