SAAS Speedometer GPS Sensor and Antenna

SG31650 – Universal GPS Speed Sensor & Antenna

The SG31650 GPS Speed Sensor and Antenna is the ideal companion to any SAAS in-dash electronic speedometer, but it's also fully compatible with any speedometer, odometer, or tachograph that requires a pulse-based speed signal — especially in vehicles where a traditional Vehicle Speed Sensor (VSS) or hall-effect sender is not available.

Perfect for classic or older vehicles, this unit offers a reliable and cost-effective alternative to cable-driven setups or hard-to-source VSS replacements. The SAAS SG31650 provides a calibration-free solution that uses GPS satellite data to calculate accurate 3D ground speed and outputs a clean pulse signal to your instrument.

⚠️ Please check with your local authorities regarding the legality of using GPS as the sole source of speed data.

✅ Key Features

• Direct match to SAAS in-dash speedometers

• High accuracy: 0.2% deviation (vs. 3–5% typical in cable drive units)

• Velocity sensitivity: < 0.06 m/sec (approx. 0.22 km/h)

• Altitude accuracy: within 10 meters

• Horizontal accuracy: within 5 meters

• Anti-GPS drift technology for stable readings

• Shockproof & circuit protected

• Fast satellite acquisition

  • First-time setup: < 60 seconds

  • Recovery from temporary power loss: < 13 seconds

  • Recovery from satellite lock loss: < 2 seconds

⚙️ Technical Specifications

• Max Speed: 300 km/h

• Max Pulse Rate: 20,000 pulses

• Compatible Antenna: SG31651

• Download: Fitting instructions available

🔌 Wiring Instructions

• RED: Power Input (+) DC 8–32V (resistor may be needed for high-voltage setups)

• BLACK: Ground (–)

• GREEN: Speed Pulse Signal Output (+)

• BLUE: Speed Pulse Signal Output (–)