Description
Hi-Link HLK-LD2420 24GHz Human Presence & Motion Radar Sensor
The Hi-Link HLK-LD2420 is a compact, high-performance 24GHz millimeter-wave radar sensor module designed for accurate human presence detection. Using advanced radar distance measurement and proprietary signal processing algorithms, this module can reliably detect motion, micro-movement, and stationary human bodies in indoor environments.
With a sensing range of up to 8 meters, configurable detection zones, and real-time refresh capability, the HLK-LD2420 is ideal for smart automation, lighting control, security systems, and IoT applications. Supporting both GPIO and UART interfaces, the module is truly plug-and-play and easy to integrate into a wide range of smart products.
Key Features:
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24GHz millimeter-wave radar human motion detection
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Detects moving, micro-moving, and stationary human presence
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Maximum sensing distance up to 8 meters
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Configurable detection range, sensitivity, and refresh rate
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Plug-and-play with default human sensing configuration
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Supports GPIO and UART communication
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Ultra-compact 20 × 20 mm module size
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Low power consumption with stable performance
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Works in the license-free 24GHz ISM band
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FCC & CE compliant
Technical Specifications
| Parameter | Details |
|---|---|
| Model | HLK-LD2420 |
| Operating Frequency | 24 GHz |
| Detection Type | Human motion, micro-motion & presence |
| Maximum Detection Range | Up to 8 m |
| Power Supply | 3.3 V DC |
| Operating Voltage Range | 3.0 V – 3.6 V |
| Average Operating Current | 50 mA |
| Interfaces | GPIO, UART |
| Antenna Type | Integrated Tx & Rx |
| Module Size | 20 mm × 20 mm |
| Application Area | Indoor environments |
Applications
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Smart lighting and occupancy-based control
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Smart home automation systems
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Human presence detection devices
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Security and intrusion detection
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Energy-saving automation solutions
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IoT and embedded projects
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Touchless control systems
Precautions
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Designed for indoor use only
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Avoid placing near strong metal obstructions
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Use regulated 3.3V power supply only
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Ensure proper configuration before deployment
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Keep away from high-frequency RF interference sources
