MAKROFON M75F/260Cu diaphragm sound transmitter

8 mm compressed air tube made of nylon (polyamide, PA). Suitable for use on a signalling compressed air horn or other compressed air applications.The material thickness is 1 mm, so the inside diameter is 6 mm.

10 mm compressed air tube made of nylon (polyamide). Suitable for use on a signalling compressed air horn or other compressed air applications.The material thickness is 1 mm, so the inside diameter is 8 mm.

Connector for connecting the 6x8 mm compressed air tube between compressor and consumer, such as a signalling compressed air horn.The screw-in connector has a 1/4" BSSP thread (parallel thread / British Standard Pipe Parallel (G)) on one side and a plug-in coupling for the 6x8 mm compressed air tube on the other.The T-plug-in coupling has three plug-in couplings for the 6x8 mm compressed air tube.

Connector for connecting the 8x10 mm compressed air tube between compressor and consumer, such as a signalling compressed air horn.The screw-in connector has a 1/4" or 3/8" BSSP thread (parallel thread / British Standard Pipe Parallel (G)) on one side and a plug-in coupling for the 8x10 mm compressed air tube on the other.

H100 signal air horn from Den Haan Rotterdam for sailing yachts and motor yachts that do not require equipment.A fog horn made of robust materials in a sleek design.The brass sound trumpet is available in a chrome-plated or matt black finish. The diaphragm housing is made of stainless steel (316L).The horn is operated with a small air compressor. The compressor recommended by DHR MARCO M2 (Article-No. 3422-101) and the required push button (Article-No. 3421-103) or a relay (Article-No. 3421-107) can be found further down on this page under "Accessories".There you will also find the required 6x8 mm compressed air tube, Article-No. 3421-100, and matching connectors.Air consumption: max. 2 l/sec. at 0.5 - 1 bar.Noise level: 118-120 dB(A) at a basic frequency of 478 Hz (model 100) or 387 Hz (model 110).Weight: 400 g

H200 series signal compressed air horn from Den Haan Rotterdam (DHR) for all types of (ocean-going) vessels such as workboats or ferries. The horn is also used in industry and on railways.A very robust fog horn with a stainless steel (316L) diaphragm housing and a chrome-plated brass bell, painted matt black. A compressor with tank, a solenoid valve and a push button are required for operation. You will find all this under "Accessories" further down on this page.There you will also find the required 6x8 mm compressed air tube, Article-No. 3421-100, as well as suitable connectors.Air consumption: 2 - 3.5 l/sec. at 2 - 10 bar.Noise levelH200: 116 - 138 dB(A) at a basic frequency of 660 Hz.H210: 116 - 132 dB(A) at a base frequency of 377 Hz.H220: 116 - 132 dB(A) at a base frequency of 307 Hz.WeightH200: 1,200 gH210: 1,400 gH220: 1,400 g

H300 series signal compressed air horn from Den Haan Rotterdam (DHR) for inland waterway vessels or small coastal vessels.A very robust signal horn with a stainless steel (316L) diaphragm housing and a chrome-plated brass bell.The horn is powered by a small air compressor. The MARCO M1 compressor with relay (Article-No. 3426-112) recommended by DHR can be found further down on this page under "Accessories", along with the required push button (Article-No. 3421-103) or the control panel (Article-No. 3421-110) and a relay (Article-No. 3421-107).There you will also find the required 6x8 mm compressed air tube, Article-No. 3421-100, as well as matching connectors.Air consumption: 1.5 - 2 l/sec. at 1 - 2 bar.Noise levelH300: 122 dB(A) at a basic frequency of 224 Hz.H310: 122 dB(A) at a base frequency of 216 Hz.H320: 132 dB(A) at a fundamental frequency of 216 Hz.H320: 132 dB(A) at a fundamental frequency of 184 Hz.WeightH300: 1,500 gH310: 1,600 gH320: 1,700 gH330: 1,900 g

The horn complies with the requirements of the COLREG for sound signaling systems on seagoing vessels with a length < 75 meters. It may also be used on inland waterway vessels (< 75 meters) operating on European waterways and German maritime waterways, where the same acoustic signal regulations apply as for seagoing vessels of the same length.The H400 Maritone air horn from Den Haan Rotterdam has an audible range of more than one nautical mile.The diaphragm housing is made of 316L stainless steel, the diaphragm of phosphor bronze. The bell is made of brass and painted white (red inside). These high-quality materials ensure a long service life.A compressor with at least 7 bar pressure and an air volume of 8-12 l/s, an 8x10 mm compressed air line with connector, a solenoid valve and a push button or control panel are required for operation. You will find all this under "Accessories & spare parts" further down on this page.Technical featuresSound pressure: 130 dB at 1/3 octave or 140 dB(A)Frequency: 440 HzCompressed air required: 7 barAir consumption: 8 to 12 l/sConnection: ¼" with coupling for plastic hose (⌀ 10 mm).Materials: Diaphragm housing made of stainless steel (1.4401) and a brass horn with white (red inside) powder coatingApproval: Sea-going vessels and inland waterway vessels on German inland waterways (each < 75 meters in length)

Magnetic valve 24 VDC for controlling a signal compressed air horn or other compressed air applications.In conjunction with a control panel or a push button, the magnetic valve controls the compressed air supply from a compressor with tank.

DHR control panel for operating a signalling air horn from the H300 series or the H400 MARITONE.The panel offers pre-programmed signals in accordance with the Collision Prevention Regulations (COLREG '72).Pre-programmed signals:Change of course to port / starboardMachine running backwardsCollision warningFog signal Motor vehicle travelling through waterFog signal Motor vehicle not travelling through waterFog signal Vehicle with restricted manoeuvrabilityFog signal vessel at anchorFog signal Vessel being towedThe following can be selected:Three different interval options: 60, 90 or 120 secondsThe panel has:A push button for manual signallingA pushbutton for switching the manoeuvring light or horn on and offTwo relays for activating the signalling air hornTwo relays for activating a signalling lightElectrical supply:24 VDC (+30%/-25%), maximum 400 mA.The front of the panel is protected to IP67, the rear to IP20.Dimensions:W x H x D 70 x 130 x 65mm, 0.4 kg.

Push button on a 90 x 66 mm screw-on base plate.The push button is used to actuate a Den Haan Rotterdam signal compressed air horn.Suitable for signalling horns from the H100, H200, H300 and H400 series.

The relay (24 VDC 65A) can be added between the push button and the compressor without tank when a signalling air horn is connected.When the compressor is activated by the push button, only a low control current flows between the pushbutton and the relay. The contacts in the pushbutton are therefore not unnecessarily stressed by the higher current. This extends the service life of the pushbutton.Weight 400 grams.

Electric horn of all brass construction, with spun body and trumpet.Brass bracket.Surface polished brass or chrome plated.Volume  114 dB(A), frequenzy 340 Hz,.Available for 12V or 24V.

The control panel SB-UV for the electronic horns MARCO EW2 and EW3 has been designed to operate the electronic whistles from the cabin.The installation time of the whistle is reduced thanks to the integrated microprocessor electronic card which transmits through only one RJ45 cable all the available functions to the whistle: horn, fog signal and aux input. The electronic card is contained in a waterproof (IP67) box with built-in option.Can be used for 12 and 24 volt power supply.

Unpressurized electric horn with electromagnetic sound generation. Stainless steel horn.Volume 118 dB (A), frequency 370 Hz.  Listen to the sound here.

Electromagnetic double horn with funnels, bracket and diaphragm made of stainless steel.The design of the bracket ensures that the cable remains hidden.Complete with mounting kit.122dB(A). Frequency 370 / 340 Hz. Weight 1.8 kg.  Listen to the sound here.

Acoustic horn / horn loudspeaker for the electronic horn MARCO EW2 (EW2M) and for the identical horn from AQUA SIGNAL.Output: 60 W at 12 V. 8 Ohms.

Marco EW2 electronic sound signaling system with pressure chamber loudspeaker.The system is approved for ships < 20 m (IMO Class IV) by RINA, Bureau Veritas, Lloyd's Register and BSH as a sound signaling system ("whistle") in accordance with KVR (COLREG 1972). You will find the relevant certificates at the end of the user manual (see "Downloads").Technical featuresSound frequency 675 HzLoudness 122 dB(A) at 1 mIntegrated ultrasonic preheating of the membrane for improved sound quality at low temperaturesOptionally for 12 V or 24 VDimensions: see photo 2Weight: 3.8 kg listen to the sound here.OperationThe control panel can be used to start fog signals or individual tone sequences (up to eight tones) with a repetition of 60 or 90 secondsThe horn can be activated as required using a separate push button (not included) - with absolute priority, e.g. before a fog signal that has already been startedScope of deliveryWaterproof (IP67), heatable horn (loudspeaker) with bracket for mounting on the mastA factory-fitted, one meter long, tin-plated power cable with a cross-section of 2 x 1.5 mm² is attached to the acoustic horn. To ensure watertightness, the cable gland is sealed (opening the seal will invalidate the warranty). The required cable length to the control unit must be connected to this cableControl unit with sound generator for below-deck installationControl panel for bulkhead mounting5 meter RJ45 cable for connecting the control panel and control unit. Note: The watertight cable gland in the control unit is unfortunately too small for the plug size of this cable and must therefore be adapted. In the control panel, the plug of the cable ensures that the box cannot be closed again. Therefore, use the control panel for bulkhead mounting.

Electronic sound signaling system with pressure chamber loudspeaker and microphone for audio announcements. The system has an approval for ships up to 20 m as a signal system and fog horn, according to COLREG 1972, IMO Class III, approved by BSH, RINA, Lloyd's Register, MCA, BureauVeritas.The EW2M sound signaling system consists of the waterproof (IP67) sound horn (loudspeaker) for mounting on the mast, the control box with sound generator (200 x 150 x 80 mm), the control panel and a microphone with talk button.The sound frequency is 675 Hz, the loudness 122 dB(A) at 1 m. A signal of up to 8 tones can be programmed, with a repeat frequency of 60 or 90 seconds.The integrated ultrasonic preheating of the membrane improves the sound quality under cold conditions.  Listen to the sound here.Available for an on-board voltage of 12 volt or 24 volt.Operation:either via the supplied control panel, which is connected via an RJ45 cable (also supplied) (length 5.0 m),or via a pressure switch (not included).

A replacement part of the electronic horn MARCO EW3 is also the acoustic horn (loudspeaker) for mounting in the mast..Fitting also as bull horn loudspeaker for outside montage.

Marco EW3 electronic sound signaling system with pressure chamber loudspeaker.The system is approved for ships < 75 m (IMO Class IV) by RINA, Bureau Veritas, Lloyd's Register and BSH as a sound signaling system ("whistle") in accordance with KVR (COLREG 1972). You will find the relevant certificates at the end of the user manual (see "Downloads").Technical featuresSound frequency 675 HzLoudness 122 dB(A) at 1 mIntegrated ultrasonic preheating of the membrane for improved sound quality at low temperaturesFor 24 VDimensions: see photo 2Weight: 3.8 kglisten to the sound here.OperationThe control panel can be used to start fog signals or individual tone sequences (up to eight tones) with a repetition of 60 or 90 secondsThe horn can be activated as required using a separate push button (not included) - with absolute priority, e.g. before a fog signal that has already been startedScope of deliveryWaterproof (IP67), heatable horn (loudspeaker) with bracket for mounting on the mastA factory-fitted, one meter long, tin-plated power cable with a cross-section of 2 x 1.5 mm² is attached to the acoustic horn. To ensure watertightness, the cable gland is sealed (opening the seal will invalidate the warranty). The required cable length to the control unit must be connected to this cableControl unit with sound generator for below-deck installationControl panel for bulkhead mounting5 meter RJ45 cable for connecting the control panel and control unit. Note: The watertight cable gland in the control unit is unfortunately too small for the plug size of this cable and must therefore be adapted. In the control panel, the plug of the cable ensures that the box cannot be closed again. Therefore, use the control panel for bulkhead mounting.

Marco EW2 electronic sound signaling system with pressure chamber loudspeaker and microphone.The system is approved for ships < 75m (IMO Class IV) by RINA, Bureau Veritas, Lloyd's Register and BSH as a sound signaling system ("whistle") in accordance with KVR (COLREG 1972). You will find the relevant certificates at the end of the user manual (see "Downloads").Technical featuresSound frequency 675 HzLoudness 122 dB(A) at 1 mIntegrated ultrasonic preheating of the membrane for improved sound quality at low temperaturesFor 24 VDimensions: see photo 2Weight: 3.8 kglisten to the sound here.OperationThe control panel can be used to start fog signals or individual tone sequences (up to eight tones) with a repetition of 60 or 90 secondsThe horn can be activated as required using a separate push button (not included) - with absolute priority, e.g. before a fog signal that has already been startedIf the VHF radio or other sources such as a radio are connected, the transmission of its signals to the loudspeaker can be startedScope of deliveryWaterproof (IP67), heatable acoustic horn (loudspeaker) with bracket for mounting on the mastA factory-fitted, one meter long, tin-plated power cable with a cross-section of 2 x 1.5 mm² is attached to the acoustic horn. To ensure watertightness, the cable gland is sealed (opening the seal will invalidate the warranty). The required cable length to the control unit must be connected to this cableControl unit with sound generator for below-deck installationControl panel for bulkhead mounting5 meter RJ45 cable for connecting the control panel and control unit. Note: The watertight cable gland in the control unit is unfortunately too small for the plug size of this cable and must therefore be adapted. In the control panel, the plug of the cable ensures that the box cannot be closed again. Therefore, use the control panel for bulkhead mounting.

Compact electro-pneumatic signal horn for installation. The horn with a very loud, amazingly low tone (volume 120 dB(A), frequency 300 Hz) is suitable for ships under 12 m in length or as a secondary system.The powerful compressor is integrated in the housing. This means that no compressed air line is required and installation is very simple.The body and the visible panel are made of plastic, the bracket is made of stainless steel.The cover is available in white (HR1), black (HR1/B) or chrome-plated (HR1/C). Optionally for 12 or 24 volt on-board voltage.The horn is supplied ready for installation with switching relay. A switch is not included in the scope of delivery. NMMA type-tested.DimensionsPanel 185 x 125 mmInstallation depth behind bulkhead 130 mm

Compact M1 compressor from the Italian manufacturer MARCO. This oil-free compressor, with a pressure of 2 bar, is suitable for intermittent operation in audible warning systems.Available in 12 V or 24 V versions.Air flow rate: 60 l/minMotor power: 180 WThreaded connection: BSP 1/8". A hose nipple for an 8x10 mm compressed air line is screwed in as standard. If a 6x8 mm compressed air line is to be used, an additional hose nipple (Part No. 1964-003, see "Accessories & spare parts") is required.Splash-proof: in accordance with IP67