Raymarine Retractable Speed & Temp Sensor

The Raymarine ST900 speed and temperature sensor offers exceptional performance with its advanced Gen2 Paddlewheel technology. This innovative sensor provides accurate speed reporting from as low as 0.3 knots and maintains reliable readings up to 45 knots, enhancing your boating experience.

Designed for minimal drag, the sensor's housing sits nearly flush with the boat's hull, featuring a compact design with only 5mm (3/16") extending outside. The integrated valve assembly helps prevent water ingress during paddlewheel maintenance, ensuring a seamless operation.

Key Features:

• Fast-response speed and water temperature sensor
• Compatible with Raymarine instruments like i40, i50, and iTC-5
• Retractable for easy access and maintenance
• Retrofit capability into existing Airmar P120 and B120 housings