Xiaomi Mijia M40S Robot Vacuum-Mop: 23000Pa Suction & LiDAR

Key Takeaways

1. The Mijia M40S robot vacuum mop features a unique liftable LiDAR navigation module, allowing it to clean under low furniture with a height of just 8.8cm and a powerful suction of up to 23000Pa.

2. It includes advanced cleaning technology with a dual blade anti-tangle main brush, retractable side brushes, and mop pads for effective edge and corner cleaning.

3. The robot utilizes a three-laser navigation system for real-time mapping and obstacle avoidance, ensuring efficient cleaning routes and preventing collisions.

4. The premium version offers automatic water management features, including high-temperature mop cleaning and hot air drying, to enhance maintenance.

5. With a 5200mAh battery, the M40S provides 75 days of free dust disposal and can be controlled via the Mi Home app or Xiao Ai voice assistant, integrating seamlessly with other Xiaomi smart devices.


Xiaomi has rolled out the Mijia M40S robot vacuum mop in China, packed with impressive upgrades that enhance deep cleaning capabilities through smart automation and a sleek design. It’s currently available for pre-order on JD.com, with the water tank version priced at 2999 yuan ($414) and the fully automatic water management option at 3699 yuan ($511). Sales are set to kick off on May 13.

Innovative Features

The M40S boasts a newly designed liftable LiDAR navigation module that smartly lowers itself when near low furniture. This clever engineering brings the overall height down to just 8.8cm, allowing it to clean under beds, sofas, and other cramped areas that many vacuums can’t access. Despite its compact size, it doesn’t skimp on power, featuring Xiaomi’s most robust suction system yet, capable of generating up to 23000Pa.

Advanced Cleaning Technology

Equipped with a dual blade anti-tangle main brush, this robot adeptly cuts through hair while cleaning, minimizing the need for manual upkeep. It also includes a retractable side brush system and mop pads that automatically extend to effectively clean edges and corners. These components work with millimeter-level precision, enhancing reach and coverage along baseboards and walls.

Smart Navigation System

The M40S employs a three-laser navigation system featuring stereo LiDAR and edge distance sensors, providing it with 3D spatial awareness and accurate obstacle avoidance. The robot can map rooms in real-time and adjusts its routes on the fly to prevent collisions with furniture or getting trapped.

The premium version comes with a compact dock that supports automatic water inlet and outlet, detergent dispensing, and high-temperature mop cleaning of up to 80°C. It also features hot air drying that finishes in just two hours and dual scraper arms to maintain cleanliness of both the mop and the base.

Battery Life and Control Options

This vacuum offers an impressive 75 days of free dust disposal and is powered by a 5200mAh battery. It can be controlled via the Mi Home app or the Xiao Ai voice assistant. Moreover, it supports HyperOS Connect, providing easy interaction with other Xiaomi smart devices.

Weighing in at approximately 3.75kg, the robot has a diameter of 350mm. The standard dock measures 470 x 360 x 572mm, while the embedded auto water version is more compact at 450 x 420 x 280mm, designed for installation in cabinets.

Xiaomi has also recently unveiled the Wireless Mouse Lite 3, which features 2.4GHz wireless connectivity, a 1000 DPI sensor, and weighs just 45g, making it ergonomic and lightweight. Additionally, the company introduced the Mijia Wireless Floor Scrubber 4 Max, which has a patented edge-cleaning arm and provides suction power up to 23,000Pa.

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