Electric Window Cleaning Robot
Model:311
The 311 Electric Window Cleaning Robot offered by Liesa factory is an automatic cleaning device for compatible smooth vertical surfaces, including windows, glass doors, large glass panels, and selected smooth stone or curtain wall surfaces. It uses vacuum adsorption to attach to the surface while moving through preset cleaning paths. Dual atomized spray heads help distribute cleaning liquid, while sensors and UPS backup functions support safer and more stable operation.
The Liesa 311 Electric Window Cleaning Robot is a square-shaped robotic window cleaner developed by a China manufacturer for residential, commercial, OEM, and distribution projects. It combines dual-side atomized water spray, a high-pressure dual-fan system, automatic airflow adjustment, edge detection, anti-slip cleaning belts, and UPS battery backup to support stable cleaning on compatible smooth vertical surfaces.
The robot operates at 24V and uses a compatible AC 100-240V power adapter for different international markets. It supports infrared remote control, optional APP control, multiple cleaning paths, and safety alerts for low battery, low water, and abnormal operating conditions. Liesa also provides customization options for body color, top-cover logo, carton printing, multilingual manuals, accessory combinations, and shipment packaging.
Product Parameters
| model | 311（square shape） |
| Specification | |
| Color | White/Black/Custom |
| Unit Dimensions (L*W*H) mm | 229*229*65 (including wheel height) |
| Unit Material | Engineering-grade ABS |
| Unit Net Weight (kg) | 1.4 |
| Gross Weight (including 1in1 carton, kg) | 2.6 kg |
| Base Dimensions (L*W*H) mm | 373*262*87 mm |
| 1in1 Carton Dimensions (L*W*H) mm | 388*100*285 mm |
| 5in1 Carton Dimensions (L*W*H) mm | 545*405*310 mm |
| Top Cover Logo | YiYin/Sticker |
| Feature | Description |
| Working Modes | 1. N-pattern cleaning, |
| 2. Z-pattern cleaning, | |
| 3. Upward cleaning, | |
| 4. Downward cleaning, | |
| 5. Leftward cleaning, | |
| 6. Rightward cleaning, | |
| 7. Full-point cleaning, | |
| 8. XZ-axis cleaning (N+Z), | |
| 9. Left-only N-pattern cleaning, | |
| 10. Right-only N-pattern cleaning | |
| Backup Battery Operating Time | Approx. 20-30 mins |
| Charging Time | Approx. 2.0 h |
| Operating Noise | Approx. 65 dB |
| Operating Temperature & Humidity Range | 0-40°C / 85% RH |
| Rated Power | 72 W |
| Rated Voltage | 24 V |
| Service Life | ≥400 h |
| Bidirectional Auto Water Spray | Yes (Atomized) |
| Number of Spray Heads | 2 (Dual-side spray, 1 head per side) |
| Water Spray Volume | 0.17 ml/min |
| Effective Spray Area | Approx. 120 m² |
| Low Water Alarm | Yes (Motorized water valve) |
| Edge Air Pressure Detection | Yes |
| Variable Frequency Airflow Algorithm | Yes |
| Antifreeze Control Algorithm | Yes |
| UPS (Uninterruptible Power Supply) | Yes |
| Automatic Air Spray Adjustment | Yes |
| Belt Self-Cleaning | Yes |
| Anti-slip Belt | Yes |
| Hybrid Management | Yes |
| Multi-language Support | Yes (Chinese + 1 language included; additional languages available at extra cost) |
| Fan Speed | 31,500 RPM ±10% (No load) |
| Speed Settings | Fixed |
| Maximum Vertical Drop Under Timed Spray | 5.5 kgf |
| Fan Operating Pressure | 2400-2800 Pa |
| Manual Update | Yes |
| Low Battery Alarm | Yes |
| Control Method | Remote control (Infrared) / APP (Optional) |
| Minimum Working Area Size | 60 * 40 cm |
| Applicable Spray Coating Thickness | ≥3 mm |
| Suitable Applications | Deep pools, garden landscapes, large stone walls, fountains, wooden doors, etc. |
| Feature | Sub-feature / Specification |
| Indicator Light | Power indicator / Different color meanings |
| Motor | Momentary motor type |
| Drive motor type | |
| Battery | Battery type |
| Battery capacity (mAh) | |
| Charging current (mA) | |
| Water Tank | Capacity (ml) |
| Water spray | |
| Adapter | Input: AC(V), Frequency(Hz), Current(A) |
| Output: Voltage(V), Current(A) | |
| Safety Line | Safety guard (Kgf) |
| Safety rope length | |
| Other | Quantity |
| Dimensions (LWH) mm | |
| Sensors | 6-axis sensor |
| Photoelectric sensor | |
| Water level sensor | |
| Highly sensitive air pressure sensor | |
| Certifications | CE |
| FCC ID | |
| RoHS | |
| WEEE | |
| Installation Data | 20Hz container capacity |
| 40Hz container capacity | |
| 40HQ container capacity |
Key Features
Dual-Side Atomized Water Spray
The Model 311 uses two independent spray heads, with one atomized spray head on each side of the robot. Each head delivers approximately 0.17 ml/min, helping distribute fine mist evenly across the cleaning path and improve the removal of dust and stubborn surface stains.
High-Pressure Dual-Fan System
Two brushless drive fans operate at approximately 31,500 RPM ±10% without load, generating a fan operating pressure of 2400-2800 Pa. The airflow system continuously monitors operating conditions and adjusts airflow to help maintain stable adhesion during cleaning.
Multi-Sensor Safety Monitoring
Four sensor systems work together to monitor the robot during operation:
The system detects edges, monitors water level and air pressure, and provides audio and visual warnings when abnormal conditions are detected.
Multiple Automatic Cleaning Paths
The robot supports 10 preset cleaning modes, including N-pattern, Z-pattern, upward, downward, leftward, rightward, full-point and combined N+Z cleaning paths. These modes allow the machine to adapt to different cleaning requirements and surface layouts.
UPS Backup Battery
A built-in UPS lithium battery provides approximately 20-30 minutes of backup operation in the event of a power interruption. Full charging takes approximately 2 hours, helping reduce the risk of sudden shutdown during cleaning.
Safety Rope for Vertical Cleaning
The standard package includes a 5-meter safety rope with a 135 kg load capacity. The rope is designed as an additional safety measure during operation on elevated vertical surfaces.
Remote Control and Optional APP
The Model 311 is operated through an infrared remote controller. An APP connection is available as an optional function for markets requiring additional control methods.
Safety and Control Functions
The Model 311 integrates several functions intended to support stable operation:
These functions are designed to help maintain adhesion and provide operational warnings during vertical cleaning.
Applications
The 311 Electric Window Cleaning Robot is suitable for cleaning compatible smooth vertical surfaces in residential and commercial environments, including:
Before use, the surface condition, dimensions, coating thickness and other operating requirements should be checked to confirm compatibility.
FAQ
Q1 Will the atomizing components inside the water tank of the Electric Window Cleaning Robot age and clog easily after long storage in high-temperature overseas warehouses?
The spray nozzles are made of high-temperature resistant ceramic and pass cyclic high-low temperature aging tests before delivery, resisting scale clogging during hot storage. Special dredging tools and maintenance guides are included in packages for distributors to provide after-sales guidance for end users.
Q2 Can we separately replace the plug types of power adapters matched with it for exports to different countries?
The voltage parameters of the main unit remain unchanged. Our factory can separately provide adapters with EU, US, UK and other standard plugs without modifying the machine structure, matching power socket standards worldwide.
Q3 Do you support customized extended safety ropes if we purchase it for large stone curtain wall projects?
Custom extended safety ropes are available on demand. All extended ropes pass the same load tensile tests, and their connectors are compatible with the main unit. We can work out separate packaging plans for bulk orders of extended accessories.
Q4 Can we pack the it as a gift set matched with our own cleaning detergent for sales?
Gift combo packaging customization is available. Our factory can adjust internal partitions of color boxes to reserve space for cleaning detergent, and customize the full printing design of packages to meet retail set sales demands directly.
Q5 Can you provide separate packing lists for each container if we place bulk orders of it for split container shipment?
Independent packing lists, weight details and corresponding certification documents will be issued for each split container shipment. The lists support multi-language printing to help overseas buyers store goods in separate warehouses and complete customs clearance in batches.
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No.1, Keyuan Wei 1st Road, Laoshan District, Qingdao City, Shandong Province, China
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