The Furuno DST-810MSF combines depth, speed, and water temperature into a single compact bronze thru-hull fitting sized at 51 mm (2"), requiring only one hull penetration. Built on the Airmar B617V housing platform, it delivers a wide fan-shaped fore-aft beam that maintains reliable bottom tracking on steep deadrise hulls and heeling sailboats. Patented speed-signal processing with 5 Hz (5× per second) paddlewheel updates ensures accurate speed readings below 5 knots and smooth linear output across all vessel speeds. Wireless connectivity to the Airmar CAST App enables in-field calibration, depth offset adjustments, and more — all without additional hardware.

Specifications:

• Housing: Bronze thru-hull, Airmar B617V style
• Measures depth, speed, and temperature in a single 51 mm (2") fitting
• Fast-response temperature sensor: ±0.2°C (±0.1°F) accuracy
• Weight: 1.6 kg (3.5 lb)
• Acoustic window: Urethane hull
• Maximum deadrise: Up to 22°
• Data update rate: 1 per second
• Minimum sounding depth: 0.5 m (1.6 ft)
• Maximum sounding depth: 70 m (230 ft)
• Pressure rating: 3 m (10 ft)
• Pulse rate: 20,000 pulses per nautical mile (5.6 Hz per knot)
• Smart sensor supply voltage at 100% sound power output: 11.5 VDC to 25 VDC
• Supply current: 40 mA
• Standard cable length: 6 m
• NMEA 2000® Load Equivalency Number (LEN): 4
• Wireless calibration via Airmar CAST App

This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.