IBUKI ES300 Electronic Horn is reputed with the outstanding durability and long life to be operated under the harsh marine environment for decades. The model is suitable for the ship length overall 20m to 75m complied with the performance standard on relevant regulations. ES300 consists of horn unit and oscillator unit. Horn unit is generated the sound from the high performance driver unit . The surface is no plastics but the metal such as marine grade aluminum. The trumpet shaped horn is specially designed to enhance the sound electrically. The oscillator unit has the function both an amplifier and a controller of the electronic signal output to the horn unit. The variant switches built-in the surface to control 4 signal modes featured the free blow mode, automatic fog signal mode alarm signal mode and general emergency alarm mode. Free blow is to generate the signal instantly by pressing the free blow switch. Automatic fog signal mode is changeover the preset signal patterns by the rotary switch.3 kinds of signal are programmed to support the navigation of ship under the poor visibility at sea. Alarm signal mode is to output the variant warning sound signal. It is programmed 6 different tones. Tone changeover is arranged by the operation of DIP switch. General emergency alarm mode is to output the 7 short,1 long signals when the ship is in emergency condition. Alarm is triggered by the external potential free contact. In addition to the sound signal, ES300 has a loudhailer function using the microphone and AUX input equipped with the oscillator unit. Power supply is DC24V.Optional AC/DC converter and heating unit is available on request.