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VBOX IISL 20 Hz GPS Data Logger – Dual Antenna

The VBOX IISL Dual Antenna (RLVB20SL) is a powerful instrument for measuring the speed, position, and angle of a moving vehicle.

This 20 Hz data logger uses a new generation of high-performance satellite receivers to accurately measure acceleration, braking distances, lap times, cornering forces, and slip, pitch and roll angle parameters.

Two antennas are placed on the vehicle a set distance apart. When you enter this distance into the VBOX IISL - Dual Antenna via the front panel display, an algorithm will use this ‘fixed baseline’ to determine the relative position and height of each antenna to an accuracy of a few millimetres.

Due to its small size, simple installation procedure and built-in configuration screen, the VBOX IISL Dual Antenna is ideally suited for use with cars, off-road vehicles, boats and bikes.


If you are not sure which version of the VBOX II you have, we explain how to find your product code, serial number and version number here



 VBOX IISL Dual Antenna

  • Non-contact speed and distance measurement using GPS
  • 2x Analogue speed, slip angle, pitch angle, roll angle outputs
  • 20 Hz update rate
  • 2x Digital speed, slip angle, pitch angle, roll angle outputs
  • Simultaneous measurement of Slip, Pitch/Roll Angle, Yaw Rate, True Heading and Velocity
  • Digital input/output (over-sampled input for digital signals)
  • CAN Bus interface for connection to VBOX Input modules
  • OLED screen display
  • USB Interface
  • Front panel configuration
  • RS232 serial interface
  • Logging up to 20 data channels (in addition to 13 standard GPS channels)
  • SD card support


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