Roborock Saros 20 Sonic

Introduction

The Roborock Saros 20 Sonic represents the world's leading robot vacuum brand's commitment to the highest range of the market. Launched in March 2026, this robot vacuum and mop combines a suction power of 36,000 Pa with a navigation and sensor system that recognises up to 300 different types of obstacles, a figure that places it amongst the most intelligent devices currently available.

Power and Cleaning System

The power of 36,000 Pa is amongst the highest on the market, sufficient to extract ingrained dirt from medium and long pile carpets. The DuoDivide Anti-Tangle main brush is specifically designed for homes with pets, as it pushes hair towards the central suction zone rather than wrapping it around the bristles. Additionally, this brush can be raised when the robot detects carpets, optimising cleaning according to the type of surface.

The side brushes also incorporate anti-tangle technology and are extendable, which allows better sweeping of corners and room edges. This combination is especially useful in homes where pet hair tends to accumulate in hard-to-reach areas. The 6,400 mAh battery provides sufficient autonomy to clean large surfaces in a single session.

Mopping System

The VibraRise 5.0 system applies a pressure of 14N through sonic vibration, a technology that helps eliminate stains adhered to the floor. The mops can extend to better reach skirting boards and lift between 8 and 18 mm when the robot passes over carpets or detects areas where it should not mop. It is usual for models in this range to include mop lifting, but the range of up to 18 mm is above average.

The device mops with warm water, which improves the dissolution of greasy dirt compared to cold water. Furthermore, it detects both dirt on the floor and the state of the mops themselves, adjusting the mopping intensity as necessary. The mops are automatically removed at the base, where they are washed with hot water at 100°C and dried with hot air at 55°C. This process ensures that each mopping cycle is carried out with clean mops and prevents the proliferation of bacteria and bad odours.

Navigation and Intelligence

The Roborock Saros 20 Sonic features a retractable 360° LiDAR navigation system combined with dual AI camera and front 3D laser sensor. This triple layer of sensors allows the robot to create precise maps of the home and avoid up to 300 different types of obstacles, including cables, shoes, toys and pet excrement.

The dual camera incorporates night vision with LED, which facilitates navigation in low-light conditions. The SmartPlan 3.0 system manages cleaning intelligently, recognising stains and adjusting the route according to the level of dirt detected. In practice, this means that the robot dedicates more time and passes to the areas that really need it. Remote access to the camera allows monitoring of the home from the app, an additional function that some users value.

Autonomy and Practical Use

With a 6,400 mAh battery, this intelligent vacuum is prepared for large homes. Although the exact autonomy in minutes is not specified, this capacity usually translates into prolonged cleaning sessions that cover large surfaces without the need for intermediate recharges.

A notable feature is its ability to overcome obstacles: it can cross single steps of up to 45 mm and double steps of up to 88 mm. This is especially useful in homes with different floor levels, raised door thresholds or thick carpets. With a height of 79.8 mm and a diameter of 353 mm, the robot glides under most furniture without problems.

Base and Maintenance

The Roborock Saros 20 Sonic's multifunctional base autonomously manages both dust emptying and mop maintenance. The dust bag has a capacity of 2.5 litres, sufficient for several weeks without manual intervention. The clean and dirty water tanks reach 4 and 3 litres respectively, which reduces the frequency of filling and emptying.

Mop washing is carried out with hot water at 100°C, a temperature that eliminates bacteria and better dissolves grease. The washing tray also self-cleans with water at 100°C, preventing residue from accumulating in the system. Drying with hot air at 55°C accelerates the process and keeps the mops in hygienic conditions. The base also includes a detergent tank that is automatically dispensed during washing. The base dimensions are 409 mm wide, 470 mm high and 440 mm deep; it is advisable to verify the available space before installation.

Conclusion

The Roborock Saros 20 Sonic is designed for demanding users seeking a completely autonomous robot mop with cutting-edge technology. Its combination of power, advanced AI and hot water mopping system makes it an ideal option for large homes, homes with pets and those who value minimising manual maintenance. A device that justifies its position in the leading manufacturer's premium range.