Fangrui Product Details Advanced Mppt Technology: Maximize Your Solar Panels Efficiency With This Mppt (maximum Power Point Tracking) Solar Charge Controller, Ensuring Optimal Performance Even In Varying Weather Conditions. Smart Connectivity: Equipped With Both Wifi And Bluetooth, This Solar Charge Controller Allows For Easy Monitoring And Adjustments Through Your Mobile Device. Stay Connected And In Control, No Matter Where You Are. Versatile Voltage Compatibility: Whether Youre Using A 12v Or 24v Solar Panel System, Our Mppt Controller Adjusts Automatically, Providing A Wide Range Of Applications. And Intelligent Design: Featuring A High-definition Lcd Display, The Solar Charge Controller Allows For Easy Monitoring Of System Performance. Its Robust Construction Ensures Long-lasting Durability And Reliability In Environmental Conditions. Due To Different Batches, There May Be Differences In Product Appearance And Printed Text, Which Not Affect Use Colour:as Shown Material:abs Type:30a Package Contents: 1 X Solar Controller