Feature:1. MPPT Technology: Using innovative MPPT technology, solar charge controller can significantly improve the energy utilization efficiency of photovoltaic system, which is about 15%20% higher than the traditional charging efficiency.2. Industrial Microchip: Solar charge controller has a built in industrial microchip with good storage function. It can also reduce energy consumption.3. Practical Functions: Solar charge controller is equipped with LCD display, and the charging and discharging parameters are adjustable. The circuit energy conversion efficiency is up to 98% with digital power supply technology .4. 12V 24V Automatically Adapt: This controller is 12V 24V automatically adapt,first connect the battery,then connect the solar panels,when you first use it, make sure the battery has enough voltage, so that the controller can recognize the correct battery type.5. Multiple Protection Functions: Internal overcurrent protection, short circuit protection, open circuit protection, reverse connection protection, dual MOS reverse current protection.Specification:Item Type: Solar Charge ControllerMaterial: ABSWeight: Approx. 395g/13.93oz Size: 13.2x6.7x3cm/5.20x2.64x1.18inSystem Voltage: 12V 24V adaptiveCurrent: 30AProduct Features:1. Industrial master control chip with memory function for parameter setting2. Large LCD display, adjustable charging and discharging parameters3. Complete three phase charging management4. Internal over current protection, short circuit protection, open circuit protection, reverse connection protection are all self recovery type, without damaging the controller5. Two way moss tube prevents the tank from reaching the circuit, with ultra low heat value..Package List:1 x Solar Charge Controller1 x Instruction