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    ZÖLLNER ZETFON 120/330K – Electronic Shiphorn (low tone) for Ship Class IV

    €1.131,-* 0 pcs on stock; delivery within 3 weeks
    The ZÖLLNER ZETFON 120/330K – Electronic Shiphorn (low tone) is type approved for marine use and produces a powerful horn for vessels up to 20 meters in length (Ship Class IV ).... Show more

    Product description

    The ZÖLLNER ZETFON 120/330K – Electronic Shiphorn is type approved for marine use (ship classification IV) and produces a powerful horn (low tone) for vessels up to 20 meters in length. The ZETFON 120/330K is a robust electrically operated whistle which is equally suitable for all types of inland and maritime navigation. 

    The ZETFON 120/330K consists of the following components:

    • ship horn unit (ZETFON 70s)
    • control unit (ZETFON ZP-8)
    • built in key (ZETFON 4676)

    Sound of the ship's horn


    • decades of experience
    • best material and workmanship - made in Germany
    • control and amplifier unit provided with reverse polarity protection of supply voltage
    • low power consumption of 100 W
    • easy installation
    • the whole system runs on 24 VDC

    Sound Characteristics

    • signals with strong overtones for best penetration of background noise level
      Even when a background noise covers the actual basic frequency the residual tone forms a base frequency in the human hearing. Two or three harmonics are sufficient for the hearing to perceive the basic frequency.
    • sound frequency of 330 Hz very advantageously ranks in the lower admissible range (250-700 Hz)


    • full compliance with the COLREGS 1972
    • type approved by all well known international authorities, certificates by the classification societies on request
    • usage
      • vessels of less than 20 m in length
      • land alarm, i.e. bunker stations, oil refineries, airports, powerplants, factories
    • system voltage: 12 VDC or 24 VDC
    • entirely made of best non-corrosion, seawater resistant materials (no plastic)

    Technical Information

    • Ship length [m]: 20
    • Horn Method: Electronic
    • Voltage: 24 VDC
    • max. fundamental frequency [Hz]: 330
    • Sound intensity in 1/3rd-octave band level at 1 m distance [dB]: 120
    • Weight [kg]: 6,2
    • Ingress protection class [IPxx]: 56


    This Zoellner ship horns for the High Seas and Inland shipping is built to the highest quality standards. It offers owners and captains a highly reliable means of meeting IMO/USCG tone signalling requirements and an aesthetically pleasing element on board with a distinctive sound that will be the envy of everyone. The audio signals are tested and certified against standards set by the International Maritime Organization (IMO) and the Collision Regulations (COLREG).

    The "Convention on the International Regulations for Preventing Collisions at Sea (COLREG, 1972 - Annex III) describes the technical details of sound signal appliances with respect to the sound signal intensity and the range of the audibility (see: COLREGS - International Regulations for Preventing Collisions at Sea; Annex Ill - Technical Details of Sound Signal Appliances; Chapter 1. Whistles (check IMO for latest version!)

    Ship length [m]: < 20

    • measured Frequencies [Hz]: 180 - 450, 450 - 800; 800 - 2100
    • Sound pressure @ 1m [dB(SPL)]: 120; 115; 111
    • Range [NM]: 0,5

    Ship length [m]: 20 - 75

    • measured Frequencies [Hz]: 250-700
    • Sound pressure @ 1m [dB(SPL)]: 130
    • Range [NM]: 1

    Ship length [m]: 75 - 200

    • measured Frequencies [Hz]: 130-350
    • Sound pressure @ 1m [dB(SPL)]: 138
    • Range [NM]: 1,5

    Ship length [m]: > 200

    • measured Frequencies [Hz]: 70-200
    • Sound pressure @ 1m [dB(SPL)]: 143
    • Range [NM]: 2

    Manufacturer information

    • Manufacturer: Zöllner Signal GmbH
    • Partnumber: 014150441 or 014151271 (with optional microphone unit) 


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