24H- internal dehumidification to prevent mildew in the machine: the internal dehumidification function helps to keep the inside of the dehumidifier dry, prevent the growth of mold, and create a healthy environment for you from the inside out. 7. Self-customized humidity enhancement Personalized setting: Built-in automatic humidity regulator, with five humidity levels to choose from (including 50%, 55%, 60%, 65% and 70%), making home comfort more suitable for personal needs. 8. Multi-angle air supply selection meets different needs: each model is equipped with wide angle, upward, forward, backward and downward air supply selection, which is helpful to improve the dehumidification efficiency whether it is dehumidifying the whole house or quickly drying clothes.