Fangrui Product Details Experience Seamlessly Solar Power Management With Our Intelligent Solar Controller, Featuring Auto Detection For 12v And 24v Battery Systems, Eliminating Manual Setups And Enhancing User Convenience. Equipped With High Efficiency Charging Management, This Controller Offers 20a Models, Effectively Managing Solar Panel And Discharge, Extending Battery Life, And Ensuring Performances. For Homeowners Seeking Sustainable Energy Solution, Outdoor Enthusiasts Requiring Reliable Power During Camping Trips, And Small Business Owners Needing Power Sources For Shops Or Farms. For Integrating Into Home Solar Systems, Providing Essential Power In Remote Areas, Serving As A Mobile Power Source On Vehicles Or Boats, And Acting As Backups During Outages. With Its Clear Led Display, Users Can Easily Battery Charging And Load Conditions. Specification:b:20a Size:.185x100x41mm/7.28x3.94x1.61inch Weight:350g Colour:white Material:aluminum Alloy Package Contents: 1 * Pwm Solar Controller Only The Ab