Features 1Main Control Chip: Industrial grade main control chip complete 3 stage charging management backflow resistance circuit ultra low heat generation 2LCD Display: Large screen LCD display charging and discharging current display accumulative power generation and discharge power query temperature display 3Light Control + Delay Control: With light control + delay control adjustable charging and discharging parameters with functions such as power off memory 4Dual USB Output: The solar charge controller with dual USB output maximum current up to 2.5A support for iPhone charging 5Self Recovery Type: Built in over current short circuit protection open circuit protection reverse connection protection all self recovery non damage to the controller Specification Item Type: DualUSBSolarChargeControllerMaterial: ABSModel: K1688Colour: BlackSystem Voltage: 12V/24V Automatic AdaptationMaximum Photovoltaic Voltage: 50VUSB Output: 2 USB outputs 5V/2.5A (Maximum)Boost Charging Voltage: 14.4VFloating Voltage: 13.7V (Default Value Adjustable)Discharge Cut off Voltage: 10.7V (Default Value Adjustable)Discharge Recovery Voltage: 12.6V (Default Value Adjustable)Charging Recovery Voltage: 13VStandby Current: <10mAWorking Temperature: -35~+60 Maximum Photovoltaic Input Power 10A 20A 30A Rated Voltage 12V/24V 130W(12V)260W(24V) 260W(12V)520W(24V) 390W(12V)780W(24V) Package List 1 x Controller1 x English User Manual Note Recommendations for safe use:1. This controller automatically recognizes 12V/24V. When installing for the first time please make sure that the battery has enough voltage so that the controller can recognize the correct battery type.2. Install the controller as close to the battery as possible to avoid voltage drop caused by excessively long wires and affect normal voltage judgment.3. This controller is suitable for various batteries (including openings seals gels etc.).4. This controller can only use photovoltaic panels as the charging source. Do not use DC or other power sources as the charging source.5. The controller will heat up when running please pay attention to install the controller on a flat well ventilated surface