Does this device work without an internet connection? Does anyone know how the wiping performance is on high-gloss boards? There are frequent problems with streaks and other smears.

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No, you must connect the device to the local network via Wi-Fi. The device can be set to 4 different wetness levels. I have not noticed any streaks on my floors. The plastered surface is pulled with pressure and dries within seconds.

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Question about Roborock S7 Pro Ultra

Does this device work without an internet connection? Does anyone know how the wiping performance is on high-gloss boards? There are frequent problems with streaks and other smears.