The main function of a solar controller) to avoid battery overcharge protection due to the charging voltage is too high and cause damage. 2) Over-discharge protection to avoid battery discharge due to low voltage damage. 3) anti-reverse function to avoid the batteries and solar panels due to positive and negative but can not be used even lead to accidents. 4) function to avoid lightning lightning damage to the entire system. 5) temperature compensation for temperature difference between the main place to ensure that the battery in the best charging effect. 6) timing function load control working hours, to avoid energy waste. 7) When the load is too large overcurrent or short circuit 3000W solar power, automatically cut off the load to ensure safe operation of the system. 8) thermal protection system is working when the temperature is too high price 2000W solar installation, solar energy to power the load automatically stops, troubleshooting, automatically resume normal operation. 9) Automatic identification voltages for different system voltage, automatic identification, without additional settings. Photovoltaic power generation has an economic advantage. From the point of view of PV power plant construction costs, with the large-scale application and promotion of solar photovoltaic power generation, especially in the upstream industry and crystalline silicon photovoltaic technology matures, the development and utilization of composite building roofs, facades and other platforms, each kilowatt photovoltaic building energy costs could reach around 2010 7000 yuan -1 million, compared to other renewable energy sources already have the same economic advantages, an investment lifetime benefit 3000W solar, day-giant energy technology (certified), Enshi Solar provided by the Wuhan days Hui Technology Co., Ltd. giant. Wuhan Tian Hui Ju Technology Co., Ltd. (www.thjnkj.com) (www.thjnkj.com) is a leader in Wuhan, energy-saving equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. In the day-giant energy technology leadership with the staff warmly welcome all inquiries negotiations to create day-technology giant to a better future.