Riff HCR-21 SQUARE Window Vacuum Cleaning robot 72W 100-240V 3 modes / 4 Cleaning cloths / remote control

Window Cleaning Robot HCR-21 is an automated solution designed for efficient cleaning of framed and frameless windows, glass doors, and other smooth glass surfaces. Using powerful vacuum suction, intelligent path planning, and microfiber cleaning pads, the robot safely moves across vertical glass surfaces and removes dirt thoroughly without leaving streaks.

An excellent choice for apartments on higher floors, homes with large windows, or anyone looking to save time and physical effort.

Suitable for Frameless Windows

Thanks to integrated edge detection technology, the robot safely operates on frameless glass surfaces without crossing the edges.

Dual-Direction Water Spray System

The robot features an automatic water spray system with a dual water tank that moistens the cleaning surface from both sides simultaneously, ensuring faster and more precise cleaning.

Square Design

The square shape allows the robot to reach corners more effectively than round window-cleaning robots.

Anti-Fall Protection

A built-in Uninterruptible Power Supply (UPS) protects the robot from falling in case of a power outage, providing up to 20 minutes for safe removal.

Visual Obstacle Detection System

The window cleaning robot uses advanced artificial intelligence with a high-sensitivity visual detection system. This technology enables the device to recognize obstacles, optimize cleaning paths, and adapt to surface edges, ensuring full coverage.

3 Automatic Operating Modes

Convenient remote control allows users to choose from three automatic cleaning modes (up then down; right then down; left then down) or operate the device manually.

Usage Recommendations

Before wet cleaning, it is recommended to perform dry cleaning using clean, dry pads to remove dust and larger particles.

For best results, use the robot on sunny days with low humidity. Avoid use during rain or high humidity to prevent streaking.

Specifications

• Voltage: AC 100–240 V, 50/60 Hz
• Power: 72 W
• Battery capacity: 650 mAh
• Vacuum suction: 2400–2800 Pa
• Water tank capacity: 100 ml
• UPS working time: up to 20 min
• Charging time: ~3.5 h
• Control: Remote control / “TUYA Smart” mobile app
• Noise level: 65–70 dB
• Cleaning modes: Automatic / Manual
• Water spray: Automatic / Manual
• Dimensions: 216 × 216 × 77 mm
• Weight: 1.3 kg

Package Contents

• Window cleaning robot
• Cleaning pads (4 pcs)
• Power adapter with cable
• Safety rope
• Water refill bottle
• Remote control
• AAA batteries (2 pcs)

Important

Only clean distilled water must be used in the water tank to prevent limescale buildup. Other compatible cleaning solutions may also be used.