Single Trumpet Chrome Brass Mini Air Boat Horn Kit with Compressor AFI Single Trumpet Chrome Brass Mini Air Boat Horn Kit looks good on any boat. Meets ABYCNMMA regulations on boats up to 66 feet in length. AFI Marine air horns produce sound levels ranging between 120 and 127 dB. The 1224 Volt compressors are both CE listed. Product Features Max Amperage Draw 12 Volt 20 Amps 24 Volt 10 Amps dB Rating 126 at one meter 13 octave band Dimensions 9.5 L x 3.5 W x 3.5 H Fundamental Frequency 630 - 15