What is the lubluelu CHYW201?

The lubluelu CHYW201 is a cordless window cleaning robot that mists water through four ultrasonic spray nozzles and lifts it off the glass with rotating microfibre pads. An internal battery powers the unit during cleaning, so no power cable has to be routed across the glass. With 6,500 Pa of suction and 6–7 kgf of holding force, the robot grips vertical, smooth, sealed glass surfaces – framed or frameless. A multi-level safety system consisting of 8 collision sensors, 4 fall sensors, a 500 mAh emergency battery (roughly 30 minutes of runtime during a power cut) and a 5-metre safety rope is designed to prevent the unit from falling. The CHYW201 is controlled exclusively via the included remote; four cleaning modes (Quick, Deep, Edge, Edge & Deep) plus intelligent path planning with N-shape, Z-shape and hybrid patterns aim to deliver an even cleaning result.

With the CHYW201, lubluelu positions itself as an entry point into automated window cleaning without having to run a cable across the glass: an internal battery powers the unit throughout the entire cleaning cycle. For clarity: lubluelu also sells the CHYW200, a technically very similar but cheaper entry-level model with a smaller water tank – shoppers searching for "lubluelu window cleaning robot" online often come across both models at once.

Cleaning Performance, Features & Controls

Water Tank and Cleaning Modes

Two separate 80 ml water tanks (160 ml total) feed the four ultrasonic spray nozzles. The remote lets you choose between four cleaning modes: Quick for a fast basic clean, Deep for more thorough cleaning, Edge for the borders, and a combined Edge & Deep mode. In practice, according to several user reviews, the Edge mode remains the biggest weak spot – edge strips aren't always fully covered, which is a design-related issue found in virtually all window cleaning robots, since the sensors protrude beyond the cleaning pads.

Controls: Remote Instead of an App

The official product page mentions an app download, but no specific app name is given. User reviews on Otto.de consistently report that no working app is actually available in practice – all control runs through the included remote. If you expect smart-home app integration, plan for that before buying: here the CHYW201 falls behind rivals like Ecovacs Winbot or the Liectroux S11, which can be controlled via a Tuya/Smart Life app.

Noise Level

lubluelu does not publish an official dB figure. User reviews, however, repeatedly describe the operating noise as "incredibly loud and annoying" – a trait shared by many window cleaning robots at this price point, but one you should factor in before buying, especially in apartment buildings.

Glass Compatibility

The robot is designed for vertical, smooth, sealed glass surfaces, framed or frameless. According to the manufacturer's FAQ it is explicitly not suitable for horizontal skylights, since the built-in gyroscope cannot reliably detect orientation there. Users also report limitations on very large, floor-to-ceiling windows or frameless sliding doors.

Our Verdict

The lubluelu CHYW201 shows that automated window cleaning doesn't have to be expensive: ultrasonic spray nozzles, 6,500 Pa of suction and a multi-level safety system with an emergency battery add up to a solid basic package for around €110. Weaknesses in edge cleaning, the audible operating noise and the lack of app control take some shine off the result compared with pricier models like the Liectroux S11 or Ecovacs Winbot W1 Pro. Still, for normal-sized vertical windows and anyone who can do without app convenience, the CHYW201 remains one of the cheapest entry points into automated window cleaning.