automatic hand dryer motor use brushless dc motor or carbon brush different,as the power,automatic hand dryers the outlet wind speed usuall 30-100m m/s different type, commercial hand dryer dry hand speed within 15 seconds, commercial hand dryers(high speed type) is rely on motor strong wind blow dry hands, hand speed dry process just 10-15 seconds, auto hand dryers In the process of dry hands can also enjoy high speed wind bring massage. auto hand dryer is equipped with automatic temperature sensor, according to the difference of temperature automatic adjustment of cold and hot wind, blowing hot air in winter, summer cool wind blowing, very comfortable, let you no longer have the summer blow hot air.