Wolo Ocean Alert Dual Trumpet Horns

Wolo Ocean Alert (low and high tone) dual trumpet air horns produce a powerful sound. Ocean Alerts are constructed of solid brass with a bright chrome finish, and their base plate is made of polish stainless steel. The horns are designed with a Lexan non-corrosive diaphragm to provide years of dependable service. To eliminate vibration, a stainless steel adjustable front pedestal bracket is included—along with a compact, heavy-duty 24 V compressor with a bright chrome finish. Additional notes: * Meets the U.S. Coast Guard's C.O.L.R.E.G.S. and U.S. Inland Navigation Rules, Annex III Regulations for boats up to 20 meters, National Marine Manufacturers Association (NMMA) Program "type accepted," and the American Boat and Yacht Council (ABYC) A-23 standard for boats up to 20 meters. Show Less