Feature: 1. Solar Controller: Industrial main chip, 16AD sampling accuracy, temperature, accurate real time discharge current display, power generation situation at a glance. 2. High Charging Efficiency: MPPT solar controller high charging efficiency, MPPT automatic focus loading, high charging efficiency, detection charging uninterrupted, two way focus tracking. 3. Intelligent 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. 4. Innovative 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%. 5. Ideal 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. Specification: Item Type: Solar Charge Controller Weight: 112g/4oz Product Material: ABS System Voltage: 12V, 24V automatic recognition Current: 10A, 20A, 30A. Package List: 1 x Solar Controller1 x Instruction Manual 1 x Connecting Wire Note: When installing for the first time, ensure that the battery has sufficient voltage so that the controller can recognize the correct battery type.