Hi-Link HLK-LD2402G 24GHz Millimeter Wave Human Motion & Presence Sensor, ±60°, Up to 10m Range
The Hi-Link HLK-LD2402G is a 24 GHz FMCW millimeter-wave radar sensor module designed for precise human motion, micro-motion, and static presence detection. It features GPIO and UART interfaces for easy integration with microcontrollers like ESP32, Arduino, and Raspberry Pi, making it ideal for smart home and industrial automation systems.
Features
- 24 GHz FMCW Radar Technology for accurate human presence and motion sensing.
- Detects motion, micro-motion, and static presence with a range up to 10 meters.
- Wide ±60° detection angle with high positional accuracy of ±0.15 meters.
- Dual-voltage operation: 3.0-3.6V core logic and 4.5-5.5V LDO input for flexible powering.
- Compact 20×20 mm form factor with GPIO and UART (115200 baud) interfaces for plug-and-play integration.
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The HLK-LD2402G employs Frequency Modulated Continuous Wave (FMCW) radar technology operating in the 24-24.25 GHz ISM band. This principle allows it to distinguish between moving targets, subtle micro-motions (like typing or breathing), and static human presence by analyzing the phase and frequency shift of the reflected signal. Integrated signal processing algorithms provide robust performance with strong immunity to environmental interference from light, temperature, and non-metallic obstacles.
Designed for reliable operation in demanding environments, the sensor functions across an industrial temperature range of -40°C to +85°C. Its compact, surface-mount design supports both ceiling and wall mounting, facilitating deployment in space-constrained applications. The module outputs real-time detection data via configurable GPIO signals or a serial UART protocol, enabling seamless integration into automation controllers, security systems, and energy management platforms.
Additional Information
| Weight | 0.002 kg |
|---|---|
| Dimensions | 2 × 2 cm |
