"24V DC Cooling Fan" is commonly used in daily life cool tool, from the beginning to the present ceiling fan USB fan, ubiquitous fan trail. Although today air conditioning has entered every household, but the fan is still no substitute for the low, as an energy-saving and environmental protection, and inexpensive tool for simple cooling, "24V DC Cooling Fan" is still a lot of people play their own unique role. Trend of the times, a variety of multi-functional fan gradually replacing the traditional "24V DC Cooling Fan". SCM as high a degree of intelligence, control of high precision, simple operation, cheap and readily available, anti-interference ability and other characteristics, more and more used in intelligent products.