ECO-WORTHY Solar Panel Dual Axis Tracking System (Increase 40% Power) with Tracker Controller, Complete Solar Tracker Kit, Ideal for Different Solar Panels, for Yard/Farm/Field[Generate more power] Dual axis solar tracker make the mounted panels turn face to sunlight any daytime. Compared to fixed solar panels, the PV power generation can increase at least 40% with the tracker. [270Rotation] With 2 axis driving and sensitive sunshine sensor, the solar tracker can rotate for 270, and make the panels to absorb the sun irradiance from north, south, west and east sides. [Steady in wind] There is a air speed sensor for windy