Overview
The ST800 speed and temperature sensor processes digital signals inside the thru-hull housing.
Then this Smart™ Sensor sends data to a chart plotter, radar screen, or digital display in either analog or NMEA 2000 ® format. These low-profile units are nearly flush, minimizing drag with only 5 mm (3/16″) extending outside of the hull.
Technical specifications
| Cable-Length | 6 m (20′) NMEA 2000® Cable |
|---|---|
| Common Use | Cruising/Racing Sailboats, Leisure/Yachting, Fishing |
| Data Rate | 1X per second |
| Functions | Speed, Temperature |
| Hole Size | 51 mm (2″) |
| Housing | Available in a plastic (P120) or bronze (B120) housing |
| Hull Material | Plastic: Fiberglass or metal, Bronze: Fiberglass or wood |
| Mounting Style | Low Profile Thru-Hull |
| Power Rating | N/A |
| Product Family | Marine |
| Protocol Output | NMEA 2000® |
| Pulses | 17,000 p/nm* (4.8 Hz per knot)—*p/nm = pulses per nautical mile |
| Retractable housing | Yes |
| Speed Range | 2 to 45 knots (2 to 52 MPH) |
| Speed Type | Paddlewheel |
| Temperature Accuracy | ±0.5°C (±1.8°F) |
| Tilted Element | No |
| Usable Shaft Length | 57 mm (2.25″) |
| Voltage | 9 to 16 VDC |
| Water Temperature | -10° To 40°C (14° to 104°F) |
| Weight | Plastic: 0.7 kg (1.4 lb.), Bronze: 1.3 kg (2.8 lb.) |








