Ultrasonic Speed Sensor

The ultrasonic speed sensor makes cutting edge, high technology speed sensing affordable. Instead of a paddlewheel, it uses two transducers mounted in one compact housing to detect particles in the water and calculates speed based on their distance apart. The transducer reacts instantaneously to changes in boat speed.
Specifications Frequency: 4.5 MHz Supply Voltage: 10-15 VDC Current: 155 ma @ 12 VDC Speed Range: 0.1 – 40 knots Hole Diameter: 52mm Hull Deadrise Angle: Up to 20º Art. No. 22997, Ultrasonic Speed Sensor