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HLK-LD2402 24GHz Human Presence Sensor 7m Radar Module GPIO UART for AIoT Smart Lighting
Overview
The HLK-LD2402 is a compact 24 GHz radar module designed for precise human presence detection up to 7 meters. With a simple GPIO UART interface, it integrates effortlessly into AIoT ecosystems, enabling intelligent lighting, security, and energy‑saving solutions.
Key Features
- High‑frequency 24 GHz radar for accurate motion and presence detection
- Maximum detection range of 7 meters in open space
- Low power consumption – ideal for battery‑powered or energy‑efficient installations
- GPIO UART interface for real‑time data streaming to microcontrollers or edge devices
- Compact 15 mm × 15 mm × 6 mm package, perfect for tight spaces
- Robust, industrial‑grade design with IP65 protection
- Compatible with major AIoT platforms (Arduino, ESP32, Raspberry Pi, etc.)
- Ready‑to‑use firmware with configurable thresholds and debounce logic
Technical Specifications
- Frequency: 24 GHz
- Detection Range: 7 m (open space)
- Power Supply: 3.3 V DC
- Operating Current: < 30 mA
- Interface: UART (TX/RX) + GPIO
- Dimensions: 15 mm × 15 mm × 6 mm
- Weight: 3 g
- Temperature Range: –40 °C to +85 °C
- Packaging: 100 pcs per carton
Applications
- Smart lighting control – dim or turn lights on/off based on presence
- Home and office security – detect intruders or occupancy status
- Energy‑saving HVAC systems – adjust airflow based on room occupancy
- Industrial automation – monitor worker presence in safety zones
- Healthcare – patient monitoring and fall detection in assisted living
- Retail analytics – track customer movement for layout optimization
Why Choose HLK-LD2402?
By combining high‑frequency radar technology with a lightweight UART interface, the HLK-LD2402 delivers reliable, low‑latency presence detection that powers AIoT smart lighting and beyond. Its small footprint and low power profile make it the perfect choice for developers building the next generation of connected homes and workplaces.
Price: Original price was: $ 5.55.$ 2.61Current price is: $ 2.61.