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Onboard monitoring

Here you will find a range of high-quality accessories for the comprehensive monitoring of all essential functions and systems on your boat. This includes precision display instruments for showing operational parameters, battery and tank monitors for reliable display of charge levels and tank volumes, as well as various transmitters and sensors for measuring physical values like temperature, pressure, and speed. The selection is rounded out by indicator lights and alarm buzzers that provide instant warnings in case of irregularities, as well as special displays for monitoring navigation lights to enhance safety on the water...

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96 products
WEMA tank sensors S3 for fuel and water
WEMA tank sensors S3 for fuel and water
Very reliable tank sensors for water and fuels.Measurement of the fill level is carried out contact less with the help of a swimmer with a ring magnet on reed contacts. The electronics are sealed and therefore absolutely unsusceptible.Mounting is done with a 1 1/4" BSP thread and fitting adapters. Hence the sensors are simple to dismount and clean. Additional lengths of up to 1200mm are available upon request.

From €39.90 *
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Tank gauge water by WEMA
Tank gauge water by WEMA
Technically perfected marine instrument in the standard installation dimension (D = 52) at an attractive price.The design is customisable, since it is very easy to change the front ring with its bayonet lock. It is possible to mount the instrument in dashboards up to 20mm deep.The operating voltage can be 12V or 24V. Water tank gauge, Colour of the front ring: black or white. Shipment: instrument with mounting material and 40cm cables.

From €39.95 *
Details
Tank gauge water by WEMA
Tank gauge water by WEMA
Tank gauge FUEL by WEMA
Tank gauge FUEL by WEMA
Technically perfected marine instrument in the standard installation dimension (D = 52) at an attractive price.The design is customisable, since it is very easy to change the front ring with its bayonet lock. It is possible to mount the instrument in dashboards up to 20mm deep.The operating voltage can be 12V or 24V. Fuel gauge, Colour of the front ring: black or white. Shipment: instrument with mounting material and 40cm cables.

From €39.95 *
Details
Tank gauge FUEL by WEMA
Tank gauge FUEL by WEMA
Adaptors for WEMA tank sensors
Adaptors for WEMA tank sensors
Accessories for the WEMA tank sensors for fuels and water and grey and black waters.The adaptors provide a 1 1/4" BSP thread which fits WEMA tank sensors.3470-100: Adaptor with 1 1/1" threads for the sensor, with 6 screws and threaded counterplate. Allows installation of the sensor in every plastic or steel tank. With gasket.3470-101: Flange with 1 1/4" threads, can be welded to a steel tank. Made from V4A inox steel.3470-102: Plasic adaptor which may be used if a VDO sensor (with flange SAE 5-hole 54mm) is to be replaced by WEMA sensor. 1 1/4" threads, 5-screw fixation as VDO sensors have. With gasket.3470-104: Counterplate with 5 threads for 3470-102. Can be used if the holes (for flange SAE 5-hole 54mm) in the tank are not threaded.

From €9.80 *
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Adaptors for WEMA tank sensors
Adaptors for WEMA tank sensors
Adaptors for WEMA tank sensors
Adaptors for WEMA tank sensors
Thermometer black VDO-VIEWLINE
Thermometer black VDO-VIEWLINE
VDO-VIEWLINE thermometer. VIEWLINE is an instrument series from the German company VDO, with over 50 years of experience in the marine industry.VDO VIEWLINE offers modern technology, high processing quality, and technical perfection: modern, clear dial design, a variety of installations (flush mounting is also possible), watertight seal pursuant to IP67 in the front, convex double window of scratch-proof plastic prevents fogging.Dials and hands use backlight-technology - clear to read, even at night, thanks to LED lighting.Most instruments are also equipped with a red warning LED.8-pin MQS plug for attachment.Standard equipment includes a black dial and black round front ring. Included: display unit and installation material in a box. Instrument diameters 52 mm. Operating power supply 8-32 V. Dial and front ring: black.. Accessories: warning point controller.

From €65.90 *
Details
Tank gauge WASTEWATER by WEMA
Tank gauge WASTEWATER by WEMA
Technically perfected marine instrument in the standard installation dimension (D = 52) at an attractive price.The design is customisable, since it is very easy to change the front ring with its bayonet lock. It is possible to mount the instrument in dashboards up to 20mm deep.The operating voltage can be 12V or 24V. Wastewater tank gauge, Colour of the front ring: black or white. Shipment: instrument with mounting material and 40cm cables.

From €39.95 *
Details
Tank gauge WASTEWATER by WEMA
Tank gauge WASTEWATER by WEMA
Rudder angle indicator (85 mm) by WEMA
Rudder angle indicator (85 mm) by WEMA
Technically optimized marine instrument in the large installation dimension (D = 85) at an attractive price.The design is customisable, since it is very easy to change the front ring with its bayonet lock. It is possible to mount the instrument in dashboards up to 20mm deep.The operating voltage can be 12V or 24V. Rudder angle indicator 40°-0°-40°, colour of the front ring: black or white. Shipment: instrument with mounting material and 40cm cables.

€82.95 *
Details
WEMA tank sensors S3H for wastewater
WEMA tank sensors S3H for wastewater
Very reliable tank sensors for grey and black waters.Measurement of the fill level is carried out contact less with the help of a swimmer with a ring magnet on reed contacts. The electronics are sealed and therefore absolutely unsusceptible.Mounting is done with a 1 1/4" BSP thread and fitting adapters. Hence the sensors are simple to dismount and clean.

From €45.90 *
Details
WEMA Alarm Buzzer
WEMA Alarm Buzzer
The universal WEMA alarm buzzer can be mounted on the dashboard.It can be connected to various sensors, e.g. to the water alarm transmitter, but also to temperature or pressure sensors.Suitable for 6 to 32 volts.

€22.50 *
Details
WEMA Alarm Buzzer
WEMA Alarm Buzzer
WEMA Alarm Buzzer
Analog voltmeter 8-16V by WEMA
Analog voltmeter 8-16V by WEMA
Technically perfected marine instrument in the standard installation dimension (D = 52) at an attractive price.The design is customisable, since it is very easy to change the front ring with its bayonet lock. It is possible to mount the instrument in dashboards up to 20mm deep.The operating voltage can be 12V or 24V. Analog voltmeter 8-16V, Colour of the front ring: black or white. Shipment: instrument with mounting material and 40cm cables.

From €39.95 *
Details
Analog voltmeter 8-16V by WEMA
Analog voltmeter 8-16V by WEMA
Digital voltmeter 8-32V by WEMA
Digital voltmeter 8-32V by WEMA
Technically perfected marine instrument in the standard installation dimension (D = 52) at an attractive price.The design is customisable, since it is very easy to change the front ring with its bayonet lock. It is possible to mount the instrument in dashboards up to 20mm deep.The operating voltage can be 12V or 24V. Digital voltmeter 8-32 V, colour of the front ring: black or white. Shipment: instrument with mounting material and 40cm cables.

From €47.95 *
Details
Digital voltmeter 8-32V by WEMA
Digital voltmeter 8-32V by WEMA
WEMA sensors
WEMA sensors
The WEMA sensors for temperature, oil pressure and rudder indicators are compatible with the gauges of different manufacturers.The bodies of the temperature sensors are made from brass, water-proof according to IP67.Some sensors are fitted with an alarm, the tolerance for temperature alarm is 3°C, the oil pressure alarm is at 0,8 bar.The rudder indicator can, without modification, serve single or double gauges with 0 - 190 Ohm.Suitable for 12 or 24V.A link to adaptors for WEMA and KUS indicators can be found under Suitable Items below.

From €23.90 *
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WEMA sensors
WEMA sensors
WEMA sensors
WEMA sensors
WEMA sensors
VERATRON tubular type sensor for tank gauges
VERATRON tubular type sensor for tank gauges
The DEEP-PIPE immersion tube sensor is the ideal sensor for fuel tanks. The level is measured by a float enclosed in a vertical tube (diameter 38 mm). Small holes at the top and bottom of the tube compensate for the surge of fuel in the tank so that the float position remains stable in any sea state.Measuring range 90-4 Ohm matched to VERATRON VDO VIEWLINE marine instruments for immersion tube transducers. (see accessories)An optionally available 6 m long connection cable with TE Superseal plug can be used to make a watertight plug-in connection to the tank sensor in accordance with IP67.Other sensors are available in various lengths from 150 mm to 1200 mm.When dimensioning the corresponding length, a minimum distance to the tank bottom of 4 mm must be taken into account.

From €49.90 *
Details
Voltmeter VDO VIEWLINE
Voltmeter VDO VIEWLINE
VDO-VIEWLINE voltmeter.VIEWLINE is an instrument series from the German company VDO, with over 50 years of experience in the marine industry.VDO VIEWLINE offers modern technology, high processing quality, and technical perfection: modern, clear dial design, a variety of installations (flush mounting is also possible), watertight seal pursuant to IP67 in the front, convex double window of scratch-proof plastic prevents fogging. Dials and hands use backlight-technology - clear to read, even at night, thanks to LED lighting.Most instruments are also equipped with a red warning LED.8-pin MQS plug for attachment.Standard equipment includes a black dial and black round front ring. Included: display unit and installation material in a box. Instrument diameters 52 mm. Operating power supply 8-16 or 18-32 Volts. Dial and front ring: black.. Accessories: warning point controller.

From €52.90 *
Details
Voltmeter VDO VIEWLINE
Voltmeter VDO VIEWLINE
Hour meter by WEMA
Hour meter by WEMA
Technically perfected marine instrument in the standard installation dimension (D = 52) at an attractive price.The design is customisable, since it is very easy to change the front ring with its bayonet lock. It is possible to mount the instrument in dashboards up to 20mm deep.The operating voltage can be 12V or 24V. Digital hour meter, Colour of the front ring: black or white. Shipment: instrument with mounting material and 40cm cables.

From €58.90 *
Details
RPM gauge (85 mm) 4000 r/min by WEMA
RPM gauge (85 mm) 4000 r/min by WEMA
Technically perfected marine instrument in the large installation dimension (D = 85) at an attractive price.The design is customisable, since it is very easy to change the front ring with its bayonet lock. It is possible to mount the instrument in dashboards up to 20mm deep.The operating voltage can be 12V or 24V. RPM gauge 4000 r/min with engine hour meter. The RPM gauge has to be connected to an inductive sensor or to the terminal W on the alternator.Colour of the front ring: black or white. Shipment: instrument with mounting material and 40cm cables.

From €79.95 *
Details
RPM gauge (85 mm) 4000 r/min by WEMA
RPM gauge (85 mm) 4000 r/min by WEMA
Bezel rings for WEMA instruments
Bezel rings for WEMA instruments
Bezel rings for our WEMA instruments.Since the original rings can easily be exchanged with their bayonet locks for the new front rings it is possible to customise the design.The stainless steel rings are particularly flat and are let in so that the instruments can be mounted almost flush (flush mounting).

From €7.50 *
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Bezel rings for WEMA instruments
Bezel rings for WEMA instruments
Water temperature gauge KUS
Water temperature gauge KUS
Reasonably priced water temperature gauge (40-120°) from one of the worldwide leading instrument manufacturers.Waterproof up to 1 metre (IP67), with a curved glass cover, excellent anti-fog property and stainless steel ring.The lighting can be switched between orange-red and yellow, the operating voltage is 12 V or 24 V. Mounting is possible in a panel with a thickness of up to 20mm.Circular instrument with a fitting diameter of 52mm.The instrument is available with a dial in black with white characters or white with black characters.

From €29.95 *
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Water temperature gauge KUS
Water temperature gauge KUS
Water temperature gauge KUS
PHILIPPI TGW tank sensor for water tanks
PHILIPPI TGW tank sensor for water tanks
Mechanical tank sensor TGW for fresh water.For gauges of TUROTEST series. The stainless steel tube sensors are made in Germany.High resolution (a switch point every 17mm), thread 1 1/4".5 (empty) to 180 (full) ohms.Comes with mounting flange and gasket.

From €122.90 *
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Tank gauge fuel VDO VIEWLINE
Tank gauge fuel VDO VIEWLINE
VDO-VIEWLINE tank gauge for fuel tanks.Different gauges to be used with either lever sensor or tubular sensor.A perfect instrument series from this German company with over 50 years of experience in the marine industry.VDO-VIEWLINE offers modern technology, high processing quality, and technical perfection: modern, clear dial design, a variety of installations (flush mounting is also possible), watertight seal pursuant to IP67 in the front, curved double window of scratch-proof plastic prevents fogging.Dials with backlight-technology - clear to read, even at night, thanks to LED lighting.Most instruments are also equipped with a red warning LED.8-pin MQS plug for attachment. Standard version with black dial and black round front ring. Instrument diameter 52 mm.Operating with power supply 8 - 32 Volt. Dial and front ring: black.. Tank sensors must be ordered separately (check "Suitable items").

From €65.90 *
Details
Tachometer VDO VIEWLINE
Tachometer VDO VIEWLINE
VDO-VIEWLINE tachometer gauge provides information engines RPM.Large instrument with white analogue pointer and digital operating hours display.Modern, clear black dial, watertight seal, pursuant to IP67 in the front, curved double window of scratch-proof plastic prevents fogging.Dials and hands use backlight-technology - clear to read, even at night, thanks to LED lighting.8-pin MQS plug for attachment.Standard equipment includes a black dial and black round front ring.Instrument comes complete with wiring sets, configuration switch and attachement material.Instrument diameters 85 mm.Operating power supply 8-32 Volt.

From €179.90 *
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Rudder indicator 85mm KOBELT 7175
Rudder indicator 85mm KOBELT 7175
The large electronic KOBELT rudder indicator 7175 M, with 80 mm visible display.The rudder indicator system will continuously monitor and indicate the position of your rudder in realtime.It has a tricolour backlit translucent display. Operating voltage 12V/24V (illumination 12V, may be changed to 24V on request). Whether you are manoeuvring, power steering or changing course, an accurate readout of the rudder position will be displayed on a tricoloured three-inch display (visible 80 mm). Body diameter 85 mm.Up to five additional repeater stations 7175-S may be connected to the master instrument 7175-MY.Also the smaller repeaters 7180-S may be connected to the master - or vice versa. We recommend to use the optional KOBELT feedback unit 7168 or 7174 (check "Suitable items").

From €599.00 *
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Rudder indicator 85mm KOBELT 7175
Rudder indicator 85mm KOBELT 7175
Rudder indicator 85mm KOBELT 7175
Rudder indicator 85mm KOBELT 7175
WEATHERDOCK ME SENSE Boat watch set
WEATHERDOCK ME SENSE Boat watch set
The WEATHERDOCK ME SENSE system allows you to monitor your boat, your yacht or your camper van from a distance in real time.The ME SENSE sensors record measured values at regular intervals, which are transmitted to a central communication unit, the ME SENSE RELAY. The IoT (Internet-of-Things) standard allows devices that are independent of each other to communicate with each other via the Internet using WLAN and exchange data.From the relay, the data is uploaded to a data cloud via a secure WLAN connection. The WiFi connection to the marina's WiFi network is used for this purpose. With the ME SENSE app, the data values can be displayed and monitored in real time on the smartphone or tablet. For example, the app offers the option of defining threshold values which, when reached, generate an alarm on the smartphone / tablet.The Basic Setwith ME SENSE RELAY WiFi and the ME SENSE temperature sensor represents the basic equipment for ME SENSE boat monitoring. The temperature sensor would detect a fire on board.The ME SENSE RELAY WiFi takes on a dual role. On the one hand, it serves as a control centre to transmit the temperature data via WLAN to the cloud and ultimately to the ME SENSE app. It also serves as a battery sensor. Since it is connected to the on-board battery for power supply, it also monitors its voltage.The Basic Set can be operated with the free ME SENSE app. A subscription to the app is required for additional sensors.The Advanced Setcontains the ME SENSE sensors for bilge and door in addition to the components of the Basic Set. This means you can already monitor four parameters when you are not on board. A too high water level in the bilge would be reported as well as the opening of the companionway door.The download of the ME SENSE app is free of charge, a subscription is required for the registration of the sensors. When purchasing the Advanced Set, the use of the app is free for the first year.Your ME SENSE boat monitoring system can be supplemented with additional sensors to additionally monitor air humidity, air pressure or the shore power connection. You will find "ME SENSE sensors" further down on this page under "Similar products".Data transmission is also possible via the mobile phone network if no marina WiFi is available. You will find the ME SENSE GATE LTE under "ME SENSE devices" further down this page under "Similar products".

From €284.00 *
Details
WEATHERDOCK ME SENSE Boat watch set
WEATHERDOCK ME SENSE Boat watch set
WEATHERDOCK ME SENSE Boat watch set
WEATHERDOCK ME SENSE Boat watch set
WEATHERDOCK ME SENSE Boat watch set
WEATHERDOCK ME SENSE Boat watch set
WEATHERDOCK ME SENSE Boat watch set
WEMA Leakage Alarm
WEMA Leakage Alarm
The WEMA water level alarm gives you an acoustic warning when the water level rises above the normal level, e.g. in the bilge.The robust switch for the alarm is mounted in the bilge at a height where there is normally no water and connected to the buzzer included. If the water inside the sensor tube rises to 80 mm, the warning buzzer switches on.Jamming of the float by foreign objects is impossible due to the surrounding V4A tube. The switching unit can be easily pulled out of the holder and cleaned. The durable design also includes the encapsulated electronics and a 3 m long connection cable with a cable cross-section of 2 x 0.75mm².The switch can also be optionally connected to a signal lamp.The maximum load capacity is 0.3 amps at 12 volts and 0.15 amps at 24 volts.The water alarm is suitable for 12 and 24 volts.

€54.95 *
Details
WEMA Leakage Alarm
WEMA Leakage Alarm
WEMA Leakage Alarm
WEMA Leakage Alarm
WEMA Leakage Alarm
The range of Smart Boat technology enables networked control and management of all relevant systems via mobile devices and central controls, allowing you to access all information at a glance.