DESC: The electronic controls identify the floor and the height of the carpet nap. The brush will be raised or lowered automatically. This guarantees optimal cleaning performance on all types of carpet and flooring and protects the floor from damage. And on hard floors, the SEBO automatic X, with its intelligent design, cleans incredibly well. The sealing strip on the bottom of the machine stops the kickback of dirt and channels the airflow through the remaining three sides, increasing the cleaning performance.