Smart Window Cleaning Robot

The 309 PRO Smart Window Cleaning Robot from LIESA, a China smart cleaning equipment manufacturer and factory, is designed for cleaning smooth vertical surfaces such as glass, tiles, marble and other suitable surfaces. The robot combines an ABS+PC integrated housing, dual-direction atomized spraying, brushless DC suction, edge-detection sensors and multiple cleaning programs in a compact design. With a 24V operating system, AC100-240V power compatibility, a built-in 60ml water tank and backup battery protection, it is designed for both residential and commercial cleaning applications.

Product Specifications

Key Features

1. Dual-Direction Atomized Spraying

The 309 PRO uses a dual-direction atomized spraying system with two adjustable water output levels. Fine mist is distributed during cleaning to help loosen dirt on suitable smooth surfaces such as glass, tiles and marble.

The two spray settings allow users to select a suitable water output level for different cleaning conditions.

2. 29,000 RPM Brushless Suction Fan

A brushless DC suction fan operates at up to 29,000 RPM, with variable vacuum pressure from 2000 to 3200 Pa. The suction system provides the adhesion required for vertical-surface cleaning while maintaining stable contact with the working surface.

3. Dual-Sensor Edge Detection

The robot combines a 6-axis sensor on the mainboard with a barometric sensor on the button board. The two sensing systems work together to identify changes around the cleaning surface and help the robot detect edges during operation.

This supports more stable movement and helps reduce cleaning-path deviation near surface boundaries.

4. Seven Intelligent Cleaning Programs

The 309 PRO includes 7 preset cleaning programs covering different movement and cleaning patterns, including:

· Spot wiping

· Horizontal straight-line cleaning

· Vertical straight-line cleaning

· Dry cleaning

· Wet cleaning

· Dry-wet combined cleaning

· Cross-cleaning patterns

The multiple programs provide more flexible operation for different cleaning tasks.

5. 60ml Built-In Water Tank

The integrated 60ml water tank supports cleaning coverage of up to 18㎡ per full fill, reducing the need for frequent manual refilling during a cleaning session.

6. Backup Battery for Power Failure Protection

The backup lithium battery requires approximately 2.5 hours to fully charge and can maintain suction for 20–30 minutes after a power interruption.

This backup power function helps maintain the robot's attachment to the cleaning surface during an unexpected power failure.

7. 5m Safety Rope with 150kg Load Capacity

A 5-meter high-strength safety rope with a 150kg load capacity is supplied with the robot. It provides an additional physical safety measure when the product is used on elevated vertical surfaces.

8. Compact Power and Noise Design

The robot operates at 72W and 24V, with compatibility with AC100-240V input power through the supported power supply system. Operating noise is rated as low as 68dB, making it suitable for regular residential and commercial cleaning environments.

9. 2.4G Wireless Remote Control

The supplied 2.4G wireless remote controller supports operation from up to 25 meters away. A low-battery buzzer provides an audible reminder, while manual firmware updating is available for later software maintenance.

10. Compact Surface Compatibility

The 309 PRO can be used on suitable smooth vertical surfaces, with a minimum applicable surface size of 30 × 30cm. Its application range includes residential and commercial surfaces where the robot can maintain stable suction.

Application Scenarios

Residential Windows

Suitable for cleaning smooth household glass surfaces, including residential windows and large glass panels.

Shop and Commercial Glass

The robot can be used for suitable glass surfaces in retail stores, commercial spaces and other indoor environments.

Stone and Marble Surfaces

Its suction and cleaning system can be applied to suitable smooth stone and marble vertical surfaces.

Smooth Doors and Other Vertical Surfaces

The robot is also suitable for other smooth vertical surfaces, including compatible smooth wooden doors and similar surfaces.

Commercial Property and Building Maintenance

The compact cleaning system can be used as part of routine cleaning tasks for suitable glass and smooth vertical surfaces in commercial properties.

Technical Construction

ABS+PC Housing

The robot uses an ABS+PC composite housing with integrated molding. The current product is available in white and pink.

Atomized Spray Assembly

The dual-direction spray structure provides two adjustable water output levels, allowing the water application to be adjusted according to the cleaning task.

Suction System

The 29,000 RPM brushless DC suction fan operates within a variable vacuum pressure range of 2000–3200 Pa to maintain adhesion on compatible vertical surfaces.

Dual Sensor System

The mainboard includes a 6-axis sensor, while the button board includes a barometric sensor. This dual-sensing structure supports edge detection and movement control during cleaning.

Power and Backup System

The robot operates at 24V and 72W, with AC100-240V input compatibility through the applicable power supply configuration. The integrated backup battery provides 20–30 minutes of suction after power interruption.

Safety and Compliance

The 309 PRO is designed with multiple safety-related functions for vertical-surface cleaning:

Backup battery: Maintains suction for 20–30 minutes after power interruption.

Safety rope: A 5-meter rope with 150kg load capacity is supplied as standard.

Dual sensing: The 6-axis and barometric sensors assist with edge detection and movement control.

The product has CE and KC compliance certification according to the supplied product information.

Standard Accessories

The standard package includes:

· 8 cleaning cloths

· Power accessories

· Dedicated spray bottle

· 5m safety rope

· 2.4G wireless remote controller

Accessory configuration can be confirmed according to the order specification.

OEM and Private Label Support

The 309 PRO is available for private-label and OEM projects serving cross-border e-commerce, offline retail and commercial property channels.

Available OEM options include:

Body Color
White, pink and other agreed configurations.

Shell Printing
Customer branding and exterior printing can be arranged according to the project requirements.

Color Box Design
Custom retail packaging and branded color box designs are available.

Multilingual Manuals
User manuals can be prepared in different languages for overseas markets.

Gift Set Packaging
The product can be combined with suitable accessories or cleaning-related items for gift-set packaging projects.

Packaging and Shipment

Two standard packing formats are available:

1pc Individual Box
Suitable for individual retail and e-commerce packaging.

5pcs Master Carton
Suitable for bulk shipping and warehouse handling.

Carton configurations can be arranged for 20ft, 40ft and 40HQ containers according to the final packaging specification.

For larger orders, split-batch shipment and other delivery arrangements can be discussed according to the purchasing plan.

FAQ

Q1: Can the cleaning cloths be purchased separately?

Yes. Cleaning cloths can be ordered separately in bulk, allowing distributors and retailers to replenish consumable accessories without purchasing additional robots.

Q2: Can the spare cleaning cloth packaging be customised?

Yes. Separate packaging for spare cleaning cloths can be developed with customer branding and product information according to the project requirements.

Q3: Does the 309 PRO support KC requirements for the Korean market?

The supplied product information states that the main unit and matching power adapter have passed KC compliance testing. Relevant certification documents can be provided according to the shipment requirements.

Q4: Can white and pink units be mixed in one master carton?

Yes. White and pink units can be mixed in the same master carton according to the agreed quantity ratio, subject to the final packing arrangement.

Q5: Can the color box be customised for gift packaging?

Yes. Custom colour boxes and gift-set packaging can be arranged for suitable OEM projects. Printing and inner packaging requirements can be confirmed before production.

Q6: Is firmware updating supported?

Yes. The 309 PRO supports manual firmware updates, and multilingual illustrated firmware-update instructions can be supplied according to the agreed project requirements.