Fangrui Product Details This Controller Is Double Shafts Sunshine Tracing Controller, It Adopt The High Precision Internal And External Ring Hole Type Sensor To Detect The Sunshine Direction, Process Analyse Judgement Through The Scm Electric Circuit On The Controller To The Sensor Signal, Execute The Whole Process Of Tracing Sunshine Through The Corresponding Motor Of Electric Relay Assembly Control Platform On The Electric Circuit Board. At The Same Time, It Still Has The Functions Such As Leveling When Meet Wind (need Optionally Configure The Air Speed Sensor), Reset In Cloudy Day Or Night, Adopt The English Liquid Crystal Display To Indicate The Corresponding Parameters, And Able To Use The Keys On The Controller Or Keys Of Infrared Controller (need Optionally Configure The Remoter) To Set Various Parameters. This Controller Corresponding Platform Required To Be Double Freedom Platform, The Drive Motor Of Platform Is Dc Brush Motor, The Motor Voltage Is 12v Or 24v, Current Of Single Motor Must Be Less Than 15a (default That