Ai-Thinker Rd-03E is a 24GHz millimeter wave radar module designed for human distance measurement, gesture recognition, and presence sensing in interactive IoT systems. Built around the S3KM111L chip, this Ai-Thinker radar sensor combines FMCW waveforms, radar signal processing, and onboard algorithms to report real-time distance and gesture data for embedded development. This Ai-Thinker 24GHz radar module is especially useful for gesture control, smart interaction panels, contactless sensing, and human detection projects. With the official host computer tool, developers can view radar output in real time and adjust parameters for better gesture sensing, distance detection, and radar-based UI applications. Features 24GHz FMCW radar for presence sensing, real-time distance measurement, and gesture recognition. S3KM111L chip solution with strong real-time performance and radar algorithm support. Up to 1GHz modulation bandwidth for accurate target detection in designated areas. Supports human body movement, micro-movement, and gesture-related sensing tasks. UART communication with a default baud rate of 256000bps for host integration. Well suited for Ai-Thinker radar interaction, touchless control, AIoT sensing, and smart terminals. Specifications Parameter Specification Model Ai-Thinker Rd-03E Chip Solution S3KM111L Radar Type 24GHz FMCW millimeter wave radar Frequency Range 24GHz to 24.25GHz Modulation Bandwidth Up to 1GHz Package DIP-5 Module Size 28.0 x 24.0mm (+/-0.2mm) Power Supply 5V, current >= 200mA Operating Temperature -40C to 85C Interface UART Default Baud Rate 256000bps Antenna On-board antenna Applications Gesture recognition terminals and contactless interface projects. Human distance sensing for display wake-up, proximity interaction, and smart kiosks. AIoT radar development requiring a compact Ai-Thinker 24GHz sensor. Interactive smart devices that need radar-based distance output and gesture feedback. Other Content Ai-Thinker Rd-03E is the better fit when your project needs gesture recognition together with distance measurement, instead of basic occupancy-only sensing. That makes this mmWave radar module useful for smarter human-machine interaction and touchless control products. Resources Ai-Thinker Rd-03E Official Documentation Ai-Thinker Rd-03E Specification 1 Ai-Thinker Rd-03E Specification 2 FAQ What makes Rd-03E different from a basic radar presence sensor?Ai-Thinker Rd-03E adds human distance measurement and gesture recognition, so it is better for interactive sensing and touchless control systems. Can Rd-03E be used in AIoT projects?Yes. This Ai-Thinker radar module is designed for AIoT, interactive terminals, and embedded products that need distance and gesture data over UART. Is the module suitable for contactless user interfaces?Yes. Its 24GHz radar sensing and gesture recognition features make it a good fit for contactless interaction design.
