This Mini Compact Low Tone Horn operates at 111 decibels and a frequency of 330±20A Hz, complying with the US Coast Guard's COLREGS and ABYC standard A-23 for vessels measuring under 12 meters (39 feet). It is made from powder-coated steel and features a corrosion-resistant 304 stainless steel bracket, facilitating straightforward installation. It is recommended for freshwater applications and holds NMMA Type Acceptance #2601746. The horn operates on 12VDC.