Sonde sondeur traversante ou à coller 50mm

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Raymarine

T905

Depth sounder: through-hull or adhesive 50mm

Designed to integrate data from your depth, speed, and temperature transducers, the Raymarine T905 (SKU T905) hull transmitter ensures a reliable connection to the onboard system. Compatible with 12/24Vdc power, it is intended for vertical installation in a ventilated environment, protected from water. The kit includes self-tapping screws for mounting.

Retail priceBenefit from the professional rate

$146.97 USD

$146.97 USD ~~$160.57 USD~~

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In stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

Opt for additional installation assistance

Technical specifications

Supported sonar technologies	Analog depth sounder (depth, speed, temperature)
Operating voltage	12/24 Vdc
Sonar connector type	Bare wires / Screw terminal
Product width	52.5 mm
Product height	90 mm
Product depth	42.5 mm
IP rating	Not applicable (must be mounted above the waterline)
Bus compatibility	Analog
Wireless connectivity	No
Mounting type	Wall mount / Vertical
Integrated speed sensor	No
Integrated temperature sensor	No

Detailed description

Designed for marine navigation systems, the Raymarine T905 hull transmitter manages the transmission of data from your depth, speed, and temperature sensors. This module is essential for centralizing information from wired transducers to onboard instrumentation, providing an integration solution for various sensor configurations.

T905 installation and connectivity

Installing the T905 transmitter requires vertical mounting at least 50 cm above the waterline, in a well-ventilated space and without direct contact with water. It must not be installed in a watertight compartment. It is powered via a 12/24Vdc source and can also be powered by a Raymarine solar panel. Connecting the transducer cables follows a precise color-coding scheme, with specific instructions for Triducers (ground must be connected to the depth connector) and for speed sensors without a temperature sensor (connection between brown and white terminals).

Integrating sensor data

The T905 consolidates signals from separate sensors (depth, speed, temperature) into a single point. It requires the application of silicone grease on the contacts to ensure reliable connections. The housing cover secures and protects the outer cable sheaths. This type of transmitter is often used in systems where the flexibility to integrate existing sensors is prioritized over the use of "all-in-one" transducers or direct NMEA 2000 systems, as seen in newer products such as Raymarine's Axiom series or other brands like Garmin or B&G.

Documentation

Type	Nom
	EN - Mounting template - Through-hull or adhesive 50mm transducer
	EN - Installation manual - Through-hull or adhesive 50mm depth sounder transducer
	EN - User Manual - 50mm Through-Hull or Adhesive Transducer
	EN - User Manual - Through-hull or adhesive 50mm transducer
	EN - User Manual - 50mm Through-Hull or Adhesive Fishfinder Transducer
	EN - User Manual - Through-hull or adhesive 50mm transducer
	EN - User Manual - 50mm Through-Hull or Adhesive Transducer

Expert opinion

Pol CONIN

Digital Manager

« Integrating wired transducers via the Raymarine T905 hull-mounted transmitter »

The Raymarine T905 hull transmitter is a critical component for integrating existing or custom wired transducers into a boat’s instrumentation network. Its value lies in bridging classic depth, speed, and temperature transducers with display systems, often within a wireless architecture (such as Raymarine’s Tacktick/Micronet systems). This is particularly relevant for sailboats where minimizing wiring and installation flexibility are key advantages.

For optimal installation, strict adherence to mounting guidelines is required: mount vertically, at least 50 cm above the waterline, in a ventilated area protected from direct water contact. It is not a submersible device nor intended for sealed compartments. Power is 12/24Vdc standard, with the option to use a Raymarine solar panel for isolated installations.

The T905’s differentiation comes from its role as a wired transducer converter and transmitter, offering an alternative to directly NMEA 2000 or wireless-compatible transducers. It is ideal for those seeking to retain high-performance existing transducers or facing cable routing constraints. Note the specific wiring requirements for Triducers and speed transducers without temperature sensors to ensure correct operation. This module is not a transducer itself but the core that interprets and transmits signals from your sensors.

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Depth sounder: through-hull or adhesive 50mm

$146.97 USD

$146.97 USD ~~$160.57 USD~~

Frequently Asked Questions

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What are the mounting requirements for the T905 transducer?

For correct installation, the T905 must be mounted vertically in a well-ventilated space and at least 50 cm above the waterline. It is crucial to avoid any direct contact with water.

At what height above the waterline should the T905 be mounted?

The T905 transducer must be mounted at least 50 cm above the waterline to ensure proper operation and prevent direct contact with water.

Can the T905 be installed in a watertight compartment?

No, the T905 must NOT be installed in a watertight compartment. It must be mounted in a well-ventilated area.

In which orientation should the T905 transducer be mounted?

The T905 must be mounted vertically, with the cables exiting from the bottom of the unit. It is important to note that the mounting template must be inverted relative to the transducer itself.

How to mount the T905 on the boat?

To mount the T905, drill three 2.5 mm holes at the locations marked "B" on the mounting template. The transmitter is then secured using the provided self-tapping screws. Do not overtighten the screws to avoid damaging the housing.

What is the procedure for connecting transducer cables to the T905?

Connecting transducer cables to the T905 follows the color-coding indicated on the unit. It is essential to sleeve the cable shields to prevent short circuits. Once connected, apply silicone grease to the contacts.

Is there a specific guideline for wiring a Triducer with the T905?

Yes. For a Triducer, the ground braid (the shielding) must be connected to the depth connector and NOT to the speed connector.

How to connect a speed sensor without a temperature sensor to the T905?

If your speed sensor does not have an integrated temperature sensor, you must connect the brown and white wires of the speed connector with a jumper to ensure proper data transmission.

Should silicone grease be applied to the T905 contacts?

Yes, it is recommended to apply silicone grease to the terminal contacts after connecting the transducer cables. This helps ensure reliable connections.

How to protect cables after connection to the T905?

After connecting the cables, it is important to support them near the transmitter. Then ensure the housing cover is properly fitted, as it is designed to hold and protect the outer cable sleeves inside the transmitter.

Which types of systems is the T905 designed to work with?

The T905 is designed to work with marine navigation systems that require centralized data from wired transducers (depth, speed, temperature) to the onboard instrumentation. It is a solution for integrating existing sensors.

Is the T905 an alternative to direct NMEA 2000 systems?

Yes, the T905 is often used in setups where flexible integration of existing transducers is preferred over "all-in-one" transducers or direct NMEA 2000 systems. It provides a different method for sensor data integration.