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. 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 Si-rex, there is one known active to exist in Massepequa, New York.