Liectroux S9 Window Cleaning Robot: 10000Pa Suction, 6-Way Spray, App Control - Which Windows It Can and Cannot Clean
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About this product
A window cleaning robot is a machine that clings to glass by vacuum and drives itself across the pane - genuinely useful on windows you cannot reach safely with a squeegee, and completely useless on panes it cannot grip. The S9 uses 10,000Pa of suction, a six-way water pump spray, two roller brushes and four corner brushes, and pairs with an app offering several cleaning modes; it carries a 110ml water tank and a 600mAh backup battery that keeps it attached for a short time if the mains fails, which is exactly why the safety tether should always be secured properly rather than treated as an accessory. Before buying, check the three limits that decide whether it works on your windows. First, the glass must be large enough and framed: the stated requirement is a pane of at least 50 by 70cm with a frame edge at least 5mm high so the sensors can recognise the boundary - frameless, curved and very small panes are out. Second, obstacles: the body stands about 75mm tall and needs roughly 8.5cm of clearance, so deep window handles, catches and close-set grilles can stop it. Third, surfaces: it is for smooth glass, not frosted, patterned or heavily fouled glass that has not been pre-cleaned. Confirm with the seller the rated glass thickness, the minimum pane size and the frame requirement, whether the safety rope and spare pads are included, and whether the app works in your region. It reduces the labour, but you still fill the tank, start it, and move it to each next pane by hand.
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Pros & cons
Pros
- 10,000Pa of suction drives it across vertical glass so you are not leaning out of the window with a squeegee
- Six-way pump spray plus two roller brushes and four corner brushes cover edges and film better than a plain squeegee
- 110ml tank with a 600mAh backup battery that keeps it attached briefly if the power fails
- App control with several cleaning modes, so you can pick a lighter or deeper pass for the dirt level
Cons
- There are operating limits: the listing requires a frame edge of at least 5mm and a pane of at least about 50 x 70cm - frameless, curved and very small panes are not suitable
- The body is about 75mm deep and needs roughly 8.5cm of clearance, so deep window handles, catches or close-set grilles can stop it
- Only for smooth glass - frosted, patterned or heavily fouled panes need pre-cleaning first
- You still fill the tank, start it and carry it between panes by hand, and the safety tether must be fixed properly every time; the listing does not state a maximum glass thickness, so confirm that with the seller
