Feature 1Solar Controller: Industrial main chip, 16AD sampling accuracy, temperature, accurate real time discharge current display, power generation situation at a glance. 2High Charging Efficiency: MPPT solar controller high charging efficiency, MPPT automatic focus loading, high charging efficiency, detection charging uninterrupted, two way focus tracking. 3Intelligent Protection: The charging controller has a variety of intelligent protection functions, including built in overcurrent protection, short circuit protection, back connection protection, open circuit protection, automatic recovery. 4Innovative MPPT Technology: Solar fast charge controller adopts innovative MPPT technology, tracking efficiency up to 99%. Compared with the ordinary controller, the efficiency can be increased by 10%30%. 5Ideal Choice: We choose excellent grade ABS material, the use of strict processing technology, to provide you with better solar controller, is your ideal choice to buy controller.Item Type:SolarChargeControllerWeight: 112g/4ozProduct Material: ABSSystem Voltage: 12V, 24V automatic recognitionCurrent: 10A, 20A, 30A .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Solar Controller1 x Instruction Manual1 x Connecting WireNoteWhen installing for the first time, ensure that the battery has sufficient voltage so that the controller can recognize the correct battery type.