This product uses the intermittent timing principle for repeated periodic humidification, and can also be used with humidity controller for constant humidity. The bucket is designed with a water-adding structure to facilitate water addition and dirt cleaning, with can prevent the growth of bacteria with certain procedures. The hollowed-out lid design allows water to directly enter the bucket while the lid is closed. The 4L large-capacity visualized bucket can always guarantee a long term continuous humidification based on the water volume. The control panels adopt electronic touch technologies, providing sensitive keys and fast reponse. The display adopts LED digital tube display technologies, realizing low power consumption and long service life. Its running is ultra-quiet. The adjustment of fog amount has 3 gears, and the power will be automatically cut off in case of water shortage, with is safe and reliable. The fans adopts quick-release interface for easy maintenance and overhaul. The air inlet uses a highly permeable activated carbon filter sponge to effectively improve the air quality. Press and hold the Mist button to enter the Sleep mode, and press any button to exit the mode automatically. The operation is simple and more user-friendly.