Xiaomi has officially launched the Mijia M40S robot vacuum mop in China, and it features a compelling set of upgrades designed to tackle deep cleaning with smart automation and an ultra-slim form factor. Now available for pre-order on JD.com, the M40S starts at 2999 yuan ($414) for the water tank version, while the fully automatic water management model is priced at 3699 yuan ($511). Sales are scheduled to begin on May 13.
Xiaomi Mijia M40S Specifications
The M40S features a newly engineered liftable LiDAR navigation module that intelligently lowers itself when approaching low clearance furniture. This design reduces the robot’s height to just 8.8cm, allowing it to clean under beds, sofas, and other tight spaces that most vacuums can’t reach. Despite its low profile, it packs serious power as it comes with Xiaomi’s most powerful suction system yet, capable of delivering up to 23000Pa.
The robot vacuum equips a dual blade anti tangle main brush that cuts through hair while sweeping, reducing manual maintenance. It also sports a retractable side brush system and mop pads that extend automatically to clean edges and corners more effectively. These arms operate with millimeter level accuracy, improving reach and coverage along baseboards and walls.
It runs on a three laser navigation system that includes stereo LiDAR and edge distance sensors, offering 3D spatial awareness and precise obstacle avoidance. The robot intelligently maps out rooms in real time and adapts routes dynamically to avoid bumping into furniture or getting stuck.
The premium version comes with a compact embedded style dock that supports automatic water inlet and outlet, detergent dispensing, and high-temperature mop cleaning up to 80°C. It also features hot air drying that completes within two hours and dual scraper arms to keep the mop and base clean.
The vacuum supports 75 days of free dust disposal, uses a 5200mAh battery, and is controlled via the Mi Home app or Xiao Ai voice assistant. It also supports HyperOS Connect, enabling seamless interaction with other Xiaomi smart devices in the ecosystem.
The robot vacuum itself weighs around 3.75kg and 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 in-cabinet installation.
In related news, Xiaomi recently launched the Wireless Mouse Lite 3, featuring 2.4GHz wireless connectivity, a 1000 DPI sensor, and a lightweight 45g ergonomic design. The company has also introduced the Mijia Wireless Floor Scrubber 4 Max, which comes with a patented edge-cleaning arm and delivers up to 23,000Pa of suction power.
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