This rubber ramp is perfect for your robot vacuum if it's having trouble getting over a door threshold. If your threshold is between 2 and 2.5 cm, this one is ideal. It comes with self-adhesive tape so that the ramp stays in place and is made up of 4 modules.

*Roborock S7 may have issues with the color black when the threshold is more than 2cm. In this case, a white or brown ramp is recommended