Hi-Link HLK-LD2402 24GHz Human Presence Radar Sensor - GPIO/UART Interface
The Hi-Link HLK-LD2402 is a 24GHz millimeter-wave radar sensor designed for detecting human presence, motion, and micro-motion within a 10-meter range. It features a compact hardware module with integrated intelligent algorithm firmware, supporting both 3.3V and 5V logic levels for easy integration with microcontrollers like Arduino, ESP32, Raspberry Pi, and industrial PLCs via its GPIO and UART interfaces.
Features
- 24GHz millimeter-wave radar technology for precise human presence and micro-motion detection.
- Detection range up to 10 meters with a wide ±60° field of view.
- Dual power supply compatibility: 3.0V–3.6V or 4.5V–5.5V DC.
- Real-time reporting via configurable GPIO and UART communication interfaces.
- Integrated intelligent algorithm firmware for plug-and-play operation with configurable sensing parameters.
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The HLK-LD2402 utilizes advanced 24GHz Frequency-Modulated Continuous Wave (FMCW) radar technology combined with a proprietary AIoT sensor SoC. This enables it to distinguish between gross motion, subtle micro-motions (like breathing), and static human presence by analyzing the phase and frequency shifts of the reflected radar signal. The onboard firmware handles complex signal processing, converting raw radar data into actionable detection events.
Designed for indoor smart applications, the sensor offers high configurability. Users can adjust detection sensitivity, trigger thresholds, and hold times for different distance intervals via UART commands. Its low average current consumption (~50 mA) and robust millimeter-wave operation make it suitable for always-on, privacy-sensitive applications where camera-based solutions are impractical.
Additional Information
| Weight | 0.01 kg |
|---|---|
| Dimensions | 7 × 10 × 2 cm |
