The Hi-Link HLK-LD2402G is a 24GHz millimeter-wave radar sensor designed for detecting human motion and presence in indoor and other suitable environments. It uses high-frequency radar sensing to identify movement and human presence, making it suitable for smart automation, security, occupancy detection, and IoT applications.
With a detection angle of approximately ±60° and a detection range of up to 10 meters, the sensor provides a wider sensing area than many conventional point-based sensors. Its radar-based detection capability allows it to detect human movement and presence without requiring direct physical contact with the subject.
The HLK-LD2402G is useful for applications where reliable human motion or occupancy detection is required, including smart lighting, automatic switching, security systems, room occupancy monitoring, and energy-saving automation. It can also be integrated with microcontrollers and embedded systems for customized detection and control applications.
The compact module design makes it convenient for DIY electronics, robotics, smart home systems, and IoT projects. Actual detection performance depends on installation height, orientation, environment, target movement, obstacles, and other surrounding conditions.

Key Features

Hi-Link HLK-LD2402G mmWave Radar Sensor
24GHz Millimeter-Wave Radar
Human Motion Detection
Human Presence Detection
Detection Angle: Approximately ±60°
Detection Range: Up to 10m
Non-Contact Detection
Radar-Based Sensing Technology
Suitable for Occupancy Detection
Useful for Smart Home Automation
Suitable for Smart Lighting Systems
Useful for Security Applications
Suitable for Automatic Switching
Useful for Energy-Saving Systems
Suitable for IoT Projects
Suitable for Embedded Systems
Useful for Robotics Applications
Suitable for Room Monitoring
Compact Module Design
Wide Detection Area
Works Without Direct Physical Contact
Suitable for DIY Electronics
Useful for Prototyping
Suitable for Automation Projects