Raymarine ST900/P120 Transducer

This unit is a dual-function sensor that tracks both your vessel's speed through the water and the current water temperature. It provides essential data for navigation and helps you monitor performance conditions in real-time.

The retractable insert allows you to pull the sensor out of the housing from inside the boat. This is incredibly useful for cleaning the paddlewheel if it gets fouled by marine growth or for protecting the sensor when you are hauling the boat or docking in shallow, debris-heavy water.

Yes, it includes a 13.7-meter (45-foot) cable, which provides ample length for most standard vessel installations. You will need to ensure your existing marine display or instrument system is compatible with this specific transducer model.

Installation requires drilling a hole through the hull for the thru-hull fitting, so it is a permanent modification. While the process is straightforward for those comfortable with marine hardware, it requires proper sealing and alignment to ensure a watertight fit.

No, this specific model is designed strictly for speed and temperature. If you require depth data, you will need a separate depth-specific transducer or a multi-function transducer that includes depth capabilities.