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1. Product Introduction
▫️ Overview
Rd-03
- Rd-03 is a radar module developed by Ai-Thinker Co., Ltd., equipped with the S3KM1110 chip from ICLEGEND MICRO. Based on FMCW radar transceiver technology, this integrated MCU millimeter-wave sensor SoC.
- Operating in the 24GHz K-band, it features a modulation bandwidth of up to 1GHz per single-frequency scan. Using FMCW (Frequency-Modulated Continuous Wave), it detects targets in a specified space and achieves high-sensitivity motion detection and subtle motion detection through radar signal processing.
- The Rd-03 module can real-time detect moving or subtly moving humans in the area. It provides visual configuration tools to easily set sensing distance ranges, sensitivity for different zones, and delay time for no-human presence.
▫️ Features
- Smart Home: Detects human presence and distance to intelligently control home appliances via real-time monitoring reports.
- Smart Security: Enables motion-activated access control, alarms, and camera linkage applications.
- Smart Lighting: Provides precise human detection for public or home lighting (e.g., motion-sensing lamps, bulbs, table lamps).
- Smart Commerce: Detects human proximity within configurable distance ranges, activates displays, and maintains device operation during presence.
- New Energy Charging/Parking Monitoring: Triggers EV charging station displays, monitors parking spaces, and prevents unauthorized access to wireless charging areas.
▫️ Comparison Table
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Parameter
| Product Image |
| Wireless Protocol |
| Chip |
| Module Flash Size (Mbits) |
| Frequency Band (MHz) |
| Package |
| Dimensions (L×W×H) (mm) |
| Operating Temp Range (℃) |
| Storage Temp Range (℃) |
| Antenna Type |
| Interface |
| Available GPIO |
| Min Voltage (V) |
| Max Voltage (V) |
| Typical Voltage (V) |
| Min Power Current (mA) |
| Rx Current (mA) |
| Standby Current (μA) |
| Deep Sleep Current (μA) |
| Certifications |
| Max TX Power (dBm) |
| Modulation |
| Protocol Support |
2. About Modules
| Module | Datasheets | PCB Footprints | Module Manual |
|---|---|---|---|
| Rd-03 | View | Download | View |
3. Firmware Related
| Module | Firmware Build | Firmware Description | Version | Download Link |
|---|---|---|---|---|
| Rd-03 | ★ Build 2165 | T30L840 Human Presence Detection Standard Firmware | V4.18_P2.0.2 | Download |
| Rd-03 | N/A | 24cm Resolution Firmware | N/A | Download |
4. Development Guide
▫️ Host Computer & Communication Protocol
- Rd-03 Serial Communication Protocol: EN
- Rd-03 Radar Sensing Visual Configuration Tool: Download
- Rd-03 SDK Chip Installation Package: Download
- Rd-03 Series Module Radome Design Guide:English
▫️ Development Tutorials
- Rd-03 with STM32: Simple Human Sensing Radar Light Tutorial: Rd-03 with STM32 Simple Human Sensing Radar Light Tutorial
- STM32 Driver for Rd-03 Demo Example: Example