That can be seen and heard! This compressor horn from MARINCO is suitable for yachts up to 20 m in length and sounds with 120 dB over the waters. The frequency is 315 Hertz /- 15 Hz. The single horn is supplied with compressor and mounting accessories and is available in two versions: 12 and 24 volt voltage. The housing and funnel of the MARINCO compressor horn are made of chrome-plated brass, making it resistant to UV rays and seawater.The dimensions of the compressor horn (L x W x H) are 425 x 94 x 94 mm. The current consumption of the 12 volt horn is 20 amps, and the consumption of the 24 volt horn is 10 amps.