Sun Tracker - Fully Automated Setup, Harmonic Drive® technology

The STR-22G provides accurate tracking and pointing of the attached solar sensors, automatically adjusting to the sun’s position from sunrise to sunset.
The compact STR-22G sun tracker is perfectly suited to support all kinds of Global, Diffuse and Direct Radiation measurement sensors. The 2-axis tracker automatically adjusts to the sun’s position by the sun sensor closed-loop control system, even if the tracker is not oriented or levelled properly. The tracker comes standard with a small table tripod (larger tripod available). It can be powered by a solar-powered battery system or DC power supply. A wide range AC power adapters can be supplied to connect to the grid.
For over 20 years, clients who have deployed STR sun-trackers have enjoyed easy set-up, smooth operation, and reliable tracking.


  • All-Weather Tracking with Integrated GPS Receiver & 4-Quadrant Sun Sensor
  • Low Power Consumption
  • Quick, Easy, Fully Automated Setup
  • Easy Integration with any DAQ system
  • Harmonic Drive® mechanical gear system, for maximum positioning accuracy
  • Deployed in Antarctica, proven in extreme climates worldwide
  • RS-232 serial interface for position control

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