sweeping robotSince its development, the specifications have become more and more advanced year by year, but there are not many products that can really make people “use it for a long time, be too lazy to use it, and not get annoyed by the details”. The threshold is stuck, you can’t get in from low places, the mop won’t dry, and you have to clean the base yourself. These small daily troubles are often the most real pain points after using it for a period of time.
The best-selling sweeping robot brand in Taiwan Stone Technology, the new flagship Saros 20 crossover launched in 2026 is precisely aimed at these “imperfections in the last mile”. From the smart lifting chassis, the three-stage high-temperature cleaning mop, the zero-winding cleaning structure, to the almost fully automated cleaning base and AI Visually interactive, Saros 20 is not just filled with data, but redefines what a true clean-free life is.
Unboxing review of Roborock Saros 20 sweeping and mopping robot｜The 2026 flagship that can pass through thresholds, enter under the bed, and completes the cleaning process in one go
Sweeping robots are launched one after another, and the numbers on the specification sheet are refreshed every year. They have stronger suction power and more functions. They seem to be able to handle almost everything. However, after they are actually used in daily life for a period of time, many people will slowly find that the imaginary “hands-free” is often stuck in some small, everyday details. The map is clearly drawn, but I try to go back and forth in front of the threshold of the door but can’t get through; I can see the bottom of the sofa and bed but can’t get in, so I can only occasionally bend down to sweep. After the mopping is completed, although the mop returns to the base wet, you still have to clean it yourself, otherwise odor will soon develop. Over time, scale and dirt begin to accumulate inside the base, which becomes a new burden that requires regular brushing.
What I originally expected was to see clean floors when I came home every day, but in reality, it turned out to be an extra set of procedures that I had to remember to check, clean, and maintain. The promised clean-free life ended up replacing labor with worry. Cleaning did not really disappear, it just took on another form.
Product positioning and first impression: What kind of flagship is Saros 20?
Because of this, when Roborock Technology, the best-selling sweeping robot brand in Taiwan, launched the Saros 20, it did not just focus on a single specification, but directly completed the entire cleaning process, from “getting in, sweeping clean, mopping thoroughly, to not having to worry about the base at all” at once. Roborock Technology’s Saros 20 flagship obstacle-crossing sweeper and tow truck is a high-end model in 2026 according to Roborock brand positioning. It’s not just about “stronger suction”, but about sweeping, mopping, avoiding obstacles, and self-cleaning the base, all to a level that’s close to fully automatic.
When I first saw Saros 20, the most intuitive feeling was “thin”. The 7.95 cm ultra-thin body has a very obvious visual and practical difference. Many areas that used to require moving furniture can now be directly drilled into by the machine.
Remove the magnetic upper cover to reveal the dust removal box. In the past, general sweeping and mopping robots often had to remember to open the dust box regularly to take out garbage and clean the dust box. Once the work was busy, it would fill up unknowingly, leading to reduced cleaning efficiency, bacterial growth and other life troubles. Fortunately, this Saros 20 is equipped with a powerful 10-in-1 all-round automatic cleaning base. The garbage will be collected in the dust bag of the base after each cleaning, so there is no need to manually clean the dust box!
Three-stage high-temperature cleaning and mopping system: the mop is not “washed”, but really clean
In the area of mop cleaning, Saros 20 directly widens the gap with most models. It supports three-stage hot water washing mop settings of 100°C, 50°C and normal temperature, which can be customized according to the degree of dirtiness. The amount of water for washing cloths can be intelligently adjusted according to the degree of soiling. You can also choose water saving, daily, depth or soaking, and can be set according to different soiling conditions. In addition, users can even set the backwash interval of the mop themselves, whether it is based on room partitions or time.
The 100°C high temperature not only washes away surface dirt, but also effectively eliminates 99.99% of bacteria. It is especially sensitive to kitchen oil stains and pet footprints. After washing, it is paired with 55°C dual-channel hot air drying. The entire process is fast and reliable, leaving no moisture to breed odor.
100°C high temperature self-cleaning base
Not only will the mop be cleaned, but the base itself will also be automatically rinsed, scraped, and washed with 100°C hot water to remove the remaining dirt on the chassis at once. This is very important for long-term use, because the real source of odor and stickiness is often not the mop, but the inside of the base.
New AdaptiLift® Smart Lift Chassis 3.0: The threshold is no longer a restricted area
One of the most common complaints from users of sweeping robots is that the map has been built and the cleaning route has been planned, but it gets stuck at the door of the room or at the junction of areas, causing the entire cleaning flow to be interrupted. Saros 20 has introduced the new AdaptiLift® smart lifting chassis 3.0 to address this long-standing pain point. It no longer relies solely on tire height for support, but directly uses a mechanical structure to solve the problem of obstacle clearance.
In terms of chassis design, Saros 20 is equipped with intelligent pivot-driven mechanical feet with joint structures, which can instantly sense the height difference of the terrain ahead and actively adjust the body posture. When encountering a threshold or a height difference, the mechanical foot will first lift the front edge of the fuselage to reduce the chance of getting stuck and make the entire obstacle surmounting movement more stable and controllable.
Further combined with the triple lifting structure composed of main wheels and auxiliary wheels, Saros 20 can simultaneously adjust the height of each contact point according to different terrains, allowing the body to maintain balance and grip during advancement. In actual use, with the double threshold design, it can smoothly cross a height difference of up to 4.8 + 4 centimeters. No manual settings or additional intervention are required throughout the process. The system will automatically judge and adjust the lifting strategy in real time, so that the cleaning process is not interrupted, and truly seamless movement between spaces is achieved.
7.95 cm ultra-thin body: truly penetrates low spaces
With the height of most sweeping robots still falling above 9 centimeters, the 7.95 centimeters of Saros 20 almost redefines the range of activities. The bottom of the sofa, the bottom of the bed, the cabinet, and the bottom of the cart are all the places where the difference is most noticeable in actual use.
Triple Zero Tangle Cleaning System: Hair hell finally solved
In terms of cleaning structure design, Saros 20 confronts one of the most troublesome problems of sweeping robots for many years: “hair entanglement”. Instead of just improving a single part, Saros 20 fully introduces zero-winding thinking from the main brush, side brush to the universal wheel walking structure, so that the cleaning efficiency can still maintain stable performance even under long-term use.
First of all, in the main brush part, Saros 20 adopts DuoDivide® zero-winding double cantilever brush design. Through a special shunt structure, the hair can be naturally directed to the suction inlet when being rolled in, instead of being wrapped around the brush shaft. This design can not only reduce the situation of hair getting stuck, but also maintain the consistency of suction output, which is especially useful for users with long hair or families with pets.
The side brush uses a FlexiArm® zero-winding arc-shaped dynamic retractable side brush. When cleaning walls and corners, the side brush will automatically extend according to the distance from the wall to sweep dust in the corners into the suction port. At the same time, the arc-shaped structure reduces the chance of hair getting entangled at the root of the brush arm. In actual operation, even if you clean along the wall for a long time, it is not easy for the hair to get more tangled.
As for the universal wheels, Saros 20 also introduces a zero-winding design to reduce the problem of hair getting caught in the wheel axle and causing uneven steering. The three key cleaning and walking components work together so that the overall system not only performs well in short-term tests, but also maintains stability under long-term use. The entire structure is certified with SGS 0% hair tangle rate and TÜV anti-hair tangle certification, providing concrete verification for zero-tangle cleaning, not just a slogan.
When you actually open the bottom for inspection, you almost don’t need to spend time cleaning out stuck hairs. This is a great plus for people with long hair or families with pets.
Mopping ability: not wet mopping, but “pressure” cleaning
When performing mopping tasks, Saros 20’s FlexiArm® dynamic retractable mop will instantly adjust its movements according to the distance between the wall and corners.
When the machine advances along the wall or turns, the mop will actively extend outwards and pressurize and mop close to the wall and corners, instead of just relying on the fixed mop in the center of the fuselage. This design actually achieves 100% coverage of the walls, cabinet legs and corner areas, eliminating the gray unclean traces that are common with sweeping robots.
In actual use, this “fixing as you go” mopping method is particularly suitable for spaces with many gaps in the tiles or where dust easily accumulates on the walls. The movement of the mop between extending and retracting is smooth and natural, which does not affect walking stability and does not require additional settings. The entire process is completed automatically by the system. After cleaning, the lines on the wall look clean and tidy, eliminating the trouble of having to manually mop the floor in the past, making mopping the floor truly complete from the center to the corners in one go.
In addition to its wall-covering performance, Saros 20 also puts great effort into its mopping power. It uses a 200-rpm constant-humidity high-speed dual-rotation pressurized mopping system. Through the synchronous high-speed rotation of the dual mops, combined with a stable downward pressure path, the mopping action is not just “carrying across the ground”, but a cleaning effect close to scrubbing.
The system will continuously control the moisture content of the mop to ensure that it can maintain a constant humidity even under high-speed operation. It will not affect the cleaning power due to excessive dryness, nor will it leave obvious water marks due to excessive moisture.
When actually mopping the floor, this high-speed rotation and pressure method is particularly sensitive to common daily footprints and dry stains left by tea or drinks. Even if the dirt has adhered to the surface of the tiles, it can be repeatedly picked up during the rotation process.
Paired with the corner mopping mechanism mentioned earlier, Saros 20 can handle the central area and dead corners of the wall at the same time in one cleaning, keeping the entire space clean from sight to touch, and truly leaving the mopping task to the machine.
StarSight® Star Array Navigation and Obstacle Avoidance System 2.0: Understand the chaos at home
In daily cleaning, the real test of the wisdom of a sweeping robot is often not the empty floor, but the debris casually thrown on the ground. The StarSight® star array navigation and obstacle avoidance system 2.0 equipped on Saros 20 is designed for this real-life scenario. Through the integration of AI vision and multiple sensors, the system can instantly identify more than 300 common obstacles, such as wires scattered on the floor, slippers kicked away, or toys left by pets. It can judge in advance and actively avoid them during the cleaning process.
In actual operation, Saros 20 will not suddenly stop in front of obstacles, nor will it repeatedly try to break through. Instead, it will go around in a smooth route adjustment method, and the overall movement line looks quite natural. With the real-time mapping function, avoided objects will also be displayed simultaneously on the App map, allowing users to clearly understand the cleaning process. Even if the home environment changes temporarily, or if people move around or items are moved during cleaning, Saros 20 can instantly re-judge the route to maintain cleaning efficiency.
In terms of vacuuming performance, Saros 20 is equipped with hurricane-level powerful suction power of up to 36,000Pa. Not only are the numbers beautiful, but the difference can be clearly felt during actual cleaning.
When it comes to dry garbage such as dust, fine sand, biscuit crumbs or cat litter on the floor, the machine can almost sweep it away without having to go back and forth many times to clean it. Even if the garbage gets stuck in the gaps between tiles or floor joints, it can be quickly pulled out and sucked into the dust collection chute under the strong airflow.
In actual use, Saros 20 can still maintain stable walking in high-suction mode, and will not affect the ground adhesion or cause stuck due to excessive suction. Paired with the zero-tangle cleaning structure mentioned in the previous paragraph, the strong suction power can be fully exerted and will not gradually decay due to hair entanglement.
This makes daily cleaning no longer just about “looking clean”, but actually removing all small dirt. It is especially suitable for use in environments where dust is likely to accumulate at home or where pets shed hair.
DirTect AI smart dirt detection: work overtime on dirty places
When encountering particularly stubborn dirt during the cleaning process, Saros 20 will not just mop it once and leave according to the instructions, but will actively determine the actual condition of the ground through DirTect AI smart dirt detection. The system can instantly identify which areas are heavily soiled, such as dried drink stains, repeated accumulation of grease under the dining table, or areas that are often stepped on and are particularly sticky.
Once it detects that the cleaning effect is insufficient, Saros 20 will automatically activate the re-mopping mode to increase the number of mops to ensure that the dirt is indeed taken away instead of leaving faint traces.
When the system determines that the mop has absorbed a large amount of dirt, Saros 20 will return to the base to rewash the mop.
After high-temperature cleaning is completed, return to the original heavily soiled area for touch-up mopping. The entire process does not require user intervention or resetting midway.
After actual use, this cleaning logic of “finding problems, dealing with problems, and then confirming the results” makes mopping the floor no longer just a formality, but a real cleaning task, and allows users to enjoy a higher-quality cleaning-free experience without knowing it.
10-in-1 all-purpose self-cleaning base: truly hands-free
If the sweeping robot itself is responsible for keeping the home clean, then the 10-in-1 all-in-one automatic cleaning base of Saros 20 is the key player responsible for eliminating all “subsequent troubles”. From the moment you finish cleaning, you barely have to move a step.
Every time it returns to the base, Saros 20 will automatically complete the dust collection operation, and you can avoid taking out the trash for up to 65 days. You only need to occasionally pay attention to the status of the dust bag.
The clean water required for mopping the floor will also be automatically replenished by the base. There is no need to repeatedly remove the water tank to add water, and the entire process is completed in one go. After the mop cleaning is completed, the base will start automatic drying, which not only shortens the waiting time, but also effectively reduces the possibility of moisture and odor.
Dust bag:
Cleaning fluid tank:
In terms of charging efficiency, Saros 20 adopts a 2.5-hour fast charging design, which is significantly faster than previous generations. Even for large-scale cleaning, it can quickly replenish the power and start again. After actual use, the entire base operates smoothly and quietly, without the interference of frequent starts and stops. It truly allows sweeping, mopping, cleaning and maintenance to be completed silently, and users only need to enjoy the clean results.
Jiuchong antibacterial and AI video interaction: from cleaning to companionship
When used for a long time, what really affects the experience of a sweeping robot is often not just its cleaning power, but whether the entire waterway and base can remain clean for a long time.
Saros 20 introduces a 9-layer antibacterial design at this point to reduce the risk of odor and bacterial growth from the source. The clean water tank has a built-in FoF descaling module, which can effectively inhibit the accumulation of scale and ensure stable water quality every time you refill the water and wash the mop.
The sewage tank is equipped with a dedicated deodorization module, which is less likely to produce pungent odors even after long-term use, keeping the entire cleaning cycle fresh and hygienic.
In addition to invisible antibacterial details, Saros 20 also extends the sweeping robot from a “home appliance” to an interactive life partner. Through the AI real-time video call and two-way voice function, you can instantly check the cleaning status of your home by opening the app when you are out. The picture is clear and smooth, and you can also “talk” to your furry children at home at any time.
For families with pets, the built-in pet snapshot function can automatically capture pets, and one-click search for pets can quickly locate pets in the home without having to search every corner.
The operation is also quite intuitive. Whether you set a cleaning schedule on your phone or quickly issue instructions directly through Apple Watch, you can control the cleaning progress in real time. Even saying “Hello Rocky” to Saros 20 can wake up the voice assistant to perform specified cleaning tasks, making cleaning management truly integrated into daily life, rather than an extra thing.
Conclusion
If the past sweeping robots “outsourced” the cleaning work, then Saros 20 further makes the entire process almost fully automatic. From the height of the fuselage that can be entered, the threshold that can be crossed, the mop that is really clean, and the cleaning base that is almost ignored, every detail responds to the real needs of long-term users.
It is not about piling up specifications for the sake of showing off skills, but about disappearing one by one those little things that you least want to spend time dealing with every day. For those who want to truly experience a clean-free life without compromising on cleaning quality, Saros 20 is indeed the most complete evolution on the market.
Roborock Technology Saros 20 sweeping and mopping robot (fill in the questionnaire to enjoy exclusive discounts)
Source: KOCPC Chinese