The company states that it can overcome steps of up to 20 mm. You could create 2 cleaning cards, but you would have to carry the device over the step. I am really enthusiastic about the device!

I have a similar step between the hallway and the living room or bedroom (3.5 cm). The robot can plop itself into both rooms, but it can't manage the way back on its own. I then have to lift it briefly.