Ai-Thinker Rd-03E-Gesture UART Sensor Modules

Transform standard devices into smart, futuristic gadgets with the Ai-Thinker Rd-03E Gesture Sensor Module. Powered by the Silicon Micro S3KM111L millimeter-wave SoC, this 24GHz radar module is designed to detect hand gestures and precise distance, enabling touchless control for your projects.

Touchless Gesture Interaction

The Rd-03E allows users to control devices without touching them. It reliably detects hand movements within a specific angular range (Azimuth ±20°, Elevation ±40°), making it perfect for:

• Smart Switches: Wave to turn lights on/off.

• Media Control: Swipe to change pages or slides on advertising screens.

• Hygiene Safety: Contactless buttons for elevators or medical equipment.

High-Precision Ranging

While optimized for gestures, this module also delivers professional-grade ranging data. It can detect moving bodies up to 6 meters and subtle micro-movements up to 3.5 meters with an accuracy of ±5cm. This dual capability allows your device to wake up when someone approaches and respond to their hand signals.

Robust & Reliable

Unlike optical sensors (cameras/IR), the Rd-03E uses 24GHz FMCW radar technology, which is unaffected by temperature, sunlight, or darkness. It features a narrow beam (1 Tx / 1 Rx) for strong anti-interference performance.

Key Features

• Gesture Recognition: Identifies hand movements for touchless command execution.

• Dual-Mode Sensing: Simultaneously performs human presence detection and distance measurement.

• Visual Configuration: Supports visual tools to configure detection intervals and sensitivity gates easily.

• Smart Filtering: Intelligent algorithms distinguish between moving, micro-moving (breathing), and stationary targets.

• Easy Integration: Standard 2.54mm DIP pins and UART interface for plug-and-play connection with Arduino, ESP32, or STM32.

Technical Specifications

Typical Application Scenarios

• Smart Home: Gesture-controlled lighting and HVAC systems.

• Digital Signage: Interactive advertising screens that wake up on approach and slide on gesture.

• Public Health: Touchless elevator buttons and restroom fixtures.

• Security: Advanced perimeter guards that track distance and movement type.

Please Download the manual here.

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Note

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