Hi-Link HLK-LD2420-P 24G human body micro motion sensor detector moudle Millimeter Wave Radar LD2420 sensor
The HLK-LD2420 24GHz Human Body Motion Detection Sensor Module is an advanced microwave radar sensor designed for precise human presence and motion detection. It is widely used in smart home automation, IoT systems, security systems, robotics, Arduino projects, industrial automation, DIY electronics, final year projects, mini projects, and research applications.
This module uses 24GHz millimeter-wave radar technology to detect both moving and stationary human presence with high sensitivity and accuracy. Unlike traditional PIR sensors, the LD2420 radar sensor can detect micro-movements such as breathing and slight body motion, making it highly effective for occupancy detection applications.
₹ 256
₹ 309
The HLK-LD2420 human body detection sensor is ideal for applications requiring accurate human occupancy and motion sensing. It is commonly used in smart lighting systems, automatic doors, security monitoring, intelligent appliances, and automation projects.
Compatible with ESPHome, Arduino IDE, ESP32, STM32, and Raspberry Pi, this module is suitable for students, hobbyists, and professional developers.
Key Features
- 24GHz millimeter-wave radar technology
- Detects moving and stationary humans
- High sensitivity presence detection
- Supports micro-motion detection
- UART serial communication interface
- Compact and low-power design
- Better accuracy than PIR sensors
- Suitable for smart automation systems
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | HLK-LD2420 |
| Sensor Type | 24GHz mmWave Radar Sensor |
| Detection Function | Human Presence & Motion Detection |
| Communication Interface | UART |
| Operating Voltage | 3.3V – 5V |
| Frequency | 24GHz |
| Detection Capability | Moving & Stationary Detection |
| Application | Smart Automation & Security |
How to Use
- Connect VCC, GND, TX, and RX pins
- Interface with ESP32 or Arduino UART
- Configure sensor parameters if required
- Read presence detection data via serial communication
Applications
- Smart home automation
- Human occupancy detection
- Security and surveillance systems
- Automatic lighting control
- IoT and embedded sensing projects
Package Includes
- 1 × HLK-LD2420 24GHz Human Detection Sensor Module
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