"Tiny Cooling Fan" intelligence is now the market development trend, with the gradual substitution of life than intelligent home appliances, intelligent home security has also become an important condition for consumers to buy products. Stop touch smart fan or to open a new model of smart appliances safe. DC brushless fan control panel, which is this board controls this power "Tiny Cooling Fan" reversing, when the power starts, the power supply fan will reverse about 20 seconds, and the dust and the fan inside the power supply rejection out, of course, if there is a relatively large internal power supply dust particles (such as hair, fiber) invade the internal power supply, it will be difficult flung chunks and dust, thus "Tiny Cooling Fan" This approach is very effective for small dust particles of dust.