Vacuum robots have become almost essential household appliances because they significantly facilitate cleaning. The most modern models offer advanced features, such as environment mapping, which optimizes the cleaning process and ensures that all areas of the rooms are vacuumed.
Xiaomi S40 Design and Structure
The Xiaomi S40 features a design similar to traditional vacuum robots, constructed with matte plastic. On top, there is a small tower housing the laser sensors, along with two buttons: one to turn the device on and another to instruct it to return to the base. It has sufficient height to pass under most sofas and beds, although the laser tower requires attention if the furniture is very low.
The dust and water reservoirs are located internally and require manual removal for waste disposal and water addition. At the bottom of the device are the rubber wheels and brushes. The main brush was designed to minimize hair and fur entanglement, although the user may still need to manually remove trapped threads in certain instances.
Cleaning Features
Following the standard of most current robots, the Xiaomi S40 offers a triple function: it vacuums, sweeps, and performs mopping, integrating everything into a single cleaning cycle. It has good suction capacity, adequate for removing everything from fine dust to larger debris, such as bread crumbs and pet food. The motor operates at four power levels, with higher suction power resulting in a higher noise level.
For the mopping function, the robot uses a microfiber cloth attached to the base, complemented by a water reservoir that gradually releases liquid. Although it is a valuable aid in housework, it is important to note that it does not have the ability to scrub the floor; its action is limited to surface dirt. For heavier stains, such as kitchen grease or dry spots, using a conventional floor cloth remains the most effective solution.
Performance on Different Floor Types
Overall, the Xiaomi robot demonstrates good performance on various types of floors, showing some specificities. On cold surfaces, such as porcelain tiles, laminates, and hardwood, it manages to capture accumulated dirt in the crevices, finishing with the removal of residual dust through the wet cloth. The rubber wheels ensure that the floor is not scratched during operation.
When encountering thin rugs and carpets, the device automatically increases suction power to collect dirt embedded in the fibers. However, there is a caveat: the model may get stuck or jam the wheels on thicker, shaggier carpets or those with long fringes, making it unsuitable for these types of cleaning. In such cases, it is recommended to adjust the map in the application so that the robot avoids such carpets.
Mapping and App Control
A prominent feature of the Xiaomi S40 is its environmental mapping system, which allows the robot to understand the layout of the rooms and plan a more efficient cleaning trajectory. This mapping is performed by the laser positioned on the device's upper tower. The usage process is simple: on the first cleaning run, it generates the map, which can be viewed in the smartphone application, and begins cleaning in straight lines, avoiding random movements.
The sensors are also responsible for preventing sudden collisions with walls and preventing falls down stairs or steps. If the residence is a duplex or has multiple floors, the application allows for the storage of different maps. However, the user must manually transport the robot and the base to the desired floor before cleaning. Centralized control occurs through the Xiaomi application, available for Android and iOS, which displays the house map in real time, showing the area already covered and the remaining battery charge. It is possible to define virtual walls in the app to restrict the robot's access to dangerous areas, such as the pet's water bowl.
Through the application, it is possible to segment cleaning by room, allowing you to program higher suction power for the living room and lower water usage when cleaning the wooden floor in the bedroom. The software also notifies the user about worn parts, such as filters and brushes, that require maintenance or replacement.
Advantages and Disadvantages of the Xiaomi S40
Laser navigation combined with the customization offered by the application configures the Xiaomi S40 as an excellent vacuum robot for those seeking more features than basic models. The device demonstrates the ability to understand the house layout without getting lost, and the customization via the app is efficient. It has satisfactory suction power for its category and handles daily dirt well.
On the other hand, the device still requires manual intervention from the user, since the dust reservoir is not emptied automatically, requiring frequent opening for filter cleaning, depending on the size of the house. An additional limitation lies in the mopping function, which only performs basic tasks and does not replace a deep clean with a traditional cloth. Furthermore, it may have difficulties with certain types of carpets.
Recommendation for the Xiaomi S40
This robot is highly recommended for individuals who want to keep the house clean daily without the constant need to sweep or vacuum manually. It proves to be a great ally for medium or large apartments and houses, and the laser navigation facilitates managing various rooms without disorientation.
It is also indicated for homes with pets that shed a lot of hair, as the suction system is effective and the brush retains threads well without constantly jamming. If the focus is on eliminating daily dust and seeking more features than elementary models, this robot is a great choice. However, if the need is for a more intense cleaning, it will not fully meet expectations.