The Ecovacs DEEBOT T20 OMNI robot hoover can clear thresholds up to 2 cm high. However, it is important to note that the clearance height may be affected by the angle at which you approach the threshold, the shape of the threshold and the presence of debris on the threshold. If you have thresholds higher than 2 cm, you may need to abrade them or cover them with carpet so that the robot hoover can cross them.