The Airmar DST820-PV-N2 is a PSTI-compliant plastic thru-hull smart multisensor combining depth, speed-through-water, and water temperature measurement with secure Bluetooth connectivity and a 235 kHz transducer frequency. Replacing the DST810, it introduces QR-code-based network pairing with a one-time security password, a Gen2 paddlewheel rated from 0.3 to 45 knots, a 5.7 Hz speed output for smoother real-time data, and an integrated attitude sensor for heel and trim readings. Free calibration is handled wirelessly through Airmar's CAST app, which unlocks advanced heel-compensated speed calibration across multiple angles and up to 10 speed entries — capabilities previously requiring expensive PC software.

Specifications:

• Model: DST820-PV-N2
• Transducer frequency: 235 kHz
• Hull material: Plastic thru-hull
• Protocol: NMEA 2000 (N2)
• Security compliance: UK PSTI standard
• Connectivity: Secure Bluetooth® with QR-code setup and one-time security password
• Paddlewheel: Gen2 design
• Speed range: Start-up data below 0.3 knots; linear accuracy from 0.6 knots; maximum 45 knots
• Speed output rate: 5.7 Hz (5× per second)
• Depth range: 0.5 m (1.6 ft) to 100 m (328 ft)
• Measurements: Depth, speed-through-water (STW), water temperature
• Integrated attitude sensor: Heel and trim data; supports heel-compensated speed calibration
• Calibration: Basic and advanced options via Airmar CAST™ app (free, iOS/Android); supports multiple heel angles and up to 10 speed entries
• Replaces: DST810

Resources:

• Owner's Manual (PDF)
• Installation Guide (PDF)
• Quick Start Guide (PDF)
• Product Brochure (PDF)