The SEBO ET-1 has four-level manual brush height adjustment. It aggressively cleans carpets, but the brush roller may be switched off, by pressing the green illuminated on/off button, to clean delicate rugs and hard floors. Its amazing steering ability provides 180? maneuverability around furniture, and the L-shaped head makes edge cleaning easy. It also has easy brush roller removal, a convenient clog removal door, and an orange warning light with automatic shut off for brush roller obstructions. Its warning light also remains illuminated during use when brush height is set too high for optimal cleaning or when the brush should be replaced because of wear. The extension side of the head cleans to the edge.