Brushless DC ceiling fan is a variable speed or multiple files can be energy-efficient ceiling fan speed control products, than the regular AC motor ceiling fans and energy-saving 45% ~ 50%. The ceiling fan DC power supply 24VDC power supply using solar energy, when the voltage is below 24V AC power when 220V/50Hz can also supply, he has a small size, light weight, low noise. Solar Panel :30-50WP (power optional) Motor: Long life brushless motor Methods of work: with the city electricity complement each other; stepless speed regulation switch; Operating Voltage 24V Blade: wood; diameter 400-500mm