Capteur plastique analogique ST900/P120 Vitesse/Température profilé traversant câble 20 m

ST900-P120 Through Hull Transducer - Plastic

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Raymarine

E70674

ST900/P120 Analog Plastic Speed/Water Temperature Through-Hull Sensor with 20 m Cable

Designed for Raymarine systems, the ST900/P120 E70674 analog plastic sensor provides accurate water speed and temperature data. This streamlined through-hull model, while representing traditional analog connectivity, remains a proven solution for existing or new installations that do not require direct NMEA 2000 interface. The product includes the ST900/P120 plastic through-hull sensor and its 20-meter cable.

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£170.13 GBP

£170.13 GBP ~~£198.90 GBP~~

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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

Operating voltage	12 V
Operating temperature	-15°C to 55°C
Max power consumption	0.25 W
Typical power consumption	0.25 W
Transducer material	Plastic
Sonar connector type	Raymarine connector
Recommended fuse rating	1 A
Cable length	20.0
Integrated temperature sensor	Yes
Compatible displays	Raymarine ST40, ST60, ST70, i50, i60
IP rating	IPX7
Bus compatibility	Analog, SeaTalk
Wired network	Analog, SeaTalk
Compass safe distance	20 cm
Mounting type	Porthole
Certifications	CE
Temperature measurement range	-10°F to 113°F
Fishing type	Sea
Integrated speed sensor	Yes
Warranty	2.0

Detailed description

Designed for direct integration with Raymarine navigation systems, the ST900/P120 E70674 analog plastic sensor provides speed and water temperature data. This through-hull profiled sensor is equipped with a 20-meter cable, allowing flexible installation on various hull types. Its design offers a low-profile under the hull, helping to minimize drag and maintain vessel performance.

Positioning and Compatibility

The ST900/P120 sensor differs from NMEA 2000 transducers, such as the Airmar DST800, by its analog interface. It is specifically suited for Raymarine multifunction displays or instruments in the ST series (ST40, ST60, ST70) and i50/i60, requiring a direct analog signal for speed and temperature display. This makes it a relevant solution for existing systems or new installations favoring a simple, dedicated analog architecture for these essential functions.

Design and Reliability

The plastic construction of this through-hull profiled sensor ensures durability suited to the marine environment, offering resistance to elements without requiring complex maintenance. The 20-meter cable provides sufficient length for most installations, facilitating connection to the main instrumentation system. The ST900/P120’s low-profile design contributes to accurate speed measurement by reducing water flow disturbances around the sensor.

Expert opinion

Pol CONIN

Digital Manager

« Raymarine ST900/P120 Sensor: A Reliable Analog Solution for Speed and Temperature »

The Raymarine ST900/P120 sensor is a fundamental solution for acquiring speed and water temperature data, particularly relevant for sailboat and powerboat owners equipped with Raymarine navigation systems from previous generations, such as the ST40, ST60 series, or i50/i60 displays requiring dedicated analog inputs. Its through-hull plastic design makes it suitable for fiberglass or wooden hulls, where simplicity of integration and the reliability of a direct signal are prioritized over the complexity of a full NMEA 2000 network.

Installation requires precise hull penetration and rigorous watertight sealing, a standard procedure for this type of transducer. The 20-meter cable provided offers useful flexibility for routing to the helm or interface box, reducing the need for additional splices. For integration with modern NMEA 2000 systems, an analog-to-digital converter will be necessary, adding a layer of complexity and cost that direct NMEA 2000 transducers (such as some Airmar models) avoid.

This sensor is a judicious choice for those seeking a reliable and direct data source without the added cost and complexity of a multifunction digital transducer when only speed and temperature are required. It is less suitable for installations with very tight hull space or for high-performance vessels where more sophisticated sensors, providing laminar flow or pitch/roll data, would be preferable.

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ST900/P120 Analog Plastic Speed/Water Temperature Through-Hull Sensor with 20 m Cable

£170.13 GBP

£170.13 GBP ~~£198.90 GBP~~

Frequently Asked Questions

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Which Raymarine devices is this sensor compatible with?

The Raymarine ST900/P120 E70674 sensor is specifically designed for Raymarine systems requiring a direct analog signal. It is compatible with compatible Raymarine multifunction displays, as well as instruments from the ST (ST40, ST60, ST70) and i50/i60 series for speed and temperature display.

What measurements does this sensor provide?

This sensor provides water speed and water temperature data. It combines these two essential functions into a single through-hull device, offering critical information for navigation.

Is this a through-hull sensor or a transom-mount sensor?

This is a through-hull sensor (through-hull). Its streamlined design is intended to be installed through the hull of your vessel for accurate speed and temperature measurement, minimizing drag.

What is the length of the cable supplied with the sensor?

The Raymarine ST900/P120 E70674 sensor comes with a 20-meter cable. This length provides sufficient flexibility for most installations, making it easier to connect to your vessel's main instrumentation system.

Is this sensor compatible with NMEA 2000 networks?

No, this sensor differs from NMEA 2000 transducers by its analog interface. It is not directly compatible with NMEA 2000 networks and is specifically designed for Raymarine systems requiring a direct analog signal.

Is the sensor made of plastic or bronze?

This sensor is made of plastic. Its plastic construction ensures durability suited to the marine environment, providing resistance to the elements without requiring complex maintenance.

What is the advantage of the streamlined design of this sensor?

The streamlined design of the ST900/P120 sensor provides several advantages:

It helps minimize drag under the hull, which aids in maintaining performance. It allows for more accurate speed measurement by reducing water flow disturbances around the sensor. It provides a discreet profile under the hull.

Does this sensor require any special maintenance?

The profiled plastic construction of this through-hull sensor is designed for durability suited to the marine environment, providing resistance to the elements without requiring complex maintenance. Regular cleaning of the sensor surface to prevent the buildup of marine fouling is recommended to maintain measurement accuracy.