Raymarine DST810 Gen2 Smart Multisensor Thru-Hull Transducer, Plastic, 0° Tilt, SeaTalkng, Bluetooth

Overview

The Raymarine E70667 is a DST810 Gen2 Airmar Smart transducer for plastic thru-hull installation, combining depth, speed-through-water, water temperature, heel, and trim data in one compact sensor. It reads depth to 330 ft, uses a 235 kHz frequency, and connects through a single SeaTalkng and NMEA 2000 network cable.

This transducer is built for boats that need instrument data without separate depth, speed, and temperature sensors. The Gen2 paddlewheel supports speed readings from 0.3 to 45 knots, while the built-in attitude sensor adds heel and trim information that is useful for sailboats, performance cruising, and setup checks on powerboats.

Bluetooth pairing with the Airmar CAST app lets speed-through-water calibration be handled from a phone or tablet. The retractable thru-hull format also makes routine cleaning and service more practical when the paddlewheel needs attention.

Key features

• Measures depth, speed-through-water, water temperature, heel, and trim from one thru-hull sensor.
• Plastic housing for fiberglass and aluminum hull installations where a plastic thru-hull fitting is suitable.
• Depth capability of 330 ft and 235 kHz operation for shallow-water and coastal instrument use.
• Gen2 paddlewheel reads speed from 0.3 to 45 knots, helping with low-speed calibration and underway performance checks.
• SeaTalkng and NMEA 2000 networking sends data to compatible Raymarine instruments, chartplotters, and multifunction displays.
• Bluetooth calibration through the Airmar CAST app reduces the need to adjust speed-through-water settings at the display.
• 20 ft cable length gives installers room to route the connection from the thru-hull location to the vessel network backbone.
• Supports deadrise angles up to 22 degrees for common sailboat and powerboat hull shapes.

Installation and setup

The E70667 is a plastic thru-hull transducer, so placement should be planned where the sensor has clean water flow across the paddlewheel and enough inside access for service. Avoid areas behind strakes, through-hulls, prop wash, or heavy turbulence, since disturbed water can affect speed-through-water readings.

The retractable insert helps with inspection and cleaning, which matters in saltwater and fouling-prone areas. As with any below-waterline fitting, installation should follow proper marine bedding, tightening, and leak-check practices for the hull material and fitting location.

Compatibility and fit

This model is intended for Raymarine instrument and multifunction display systems using SeaTalkng or NMEA 2000 networking. It is a good match for boats where depth, speed, temperature, heel, and trim data need to be shared across the onboard electronics network rather than read by a single standalone display.

Before ordering, confirm that the hull material, deadrise, available cable route, and network connection match the vessel. The plastic thru-hull body is listed for fiberglass and aluminum hulls, and the installation location must allow safe access from inside the boat.

Use on board

For cruising boats, the transducer keeps core instrument data available at the helm for depth awareness, speed checks, and water temperature readings. For sailors, heel and trim data add useful context when comparing boat speed, sail trim, and loading from one tack to the other.

The single-sensor layout also helps keep the hull cleaner than separate sensors for each function. It suits owners upgrading an older instrument transducer or building a Raymarine network where accurate speed-through-water and depth data are part of everyday navigation.