Viomi Alpha S9

The Viomi Alpha S9 uses a Nidec motor engineered for low noise, running at around 65dB even during heavy cleaning cycles. The 30-day auto-dumping base empties the robot's internal bin automatically, keeping your hands clean throughout the month.

This robot suits homes where quiet operation matters, like those with sleeping infants or noise-sensitive pets. The short dumping cycle also benefits people with allergies who prefer the dust off the robot more frequently.