Ultrasonic speed sensor. Measures speed as low as 0.1 knots. Speed calculated every 1/2 second. No moving parts or paddle wheel to clean. Nonfouling. Compatible with the DSM-400 sounder modules.
- Sensors: Speed
- Material: Bronze
- Frequency: 4.5 mHz
- Stem: 6.0"
- Compatible Hull Material: fiberglass, wood, or aluminum
- Hole diameter for installation: 2"
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