Hi-Link HLK-LD2410 24GHz Human Presence Radar Sensor Module

The HLK-LD2410 Radar Sensor Module is a high-precision 24GHz millimeter-wave human detection sensor designed to detect both human presence and movement — including tiny micro-motions like breathing. This makes it ideal for smart home automation, security monitoring, energy saving systems, occupancy detection and health-based applications.

Unlike PIR motion sensors, the LD2410 can detect stationary humans through micro-movement sensing, providing reliable performance even in dark or obstructed environments. It features an integrated PCB antenna and communicates through a UART (serial) interface, allowing easy integration with Arduino, ESP32, STM32, Raspberry Pi and other controllers.

The detection range is configurable up to ~5 metres, and the module is designed for low-power continuous operation, making it suitable for always-on smart devices.

Features

• 24GHz millimeter-wave radar sensing

• Detects human presence, motion & micro-movements

• Adjustable detection range (up to ~5m)

• Works reliably in dark or visually-blocked areas

• Low-power compact design

• Integrated PCB antenna

• UART serial communication

• Stable operation under light, temperature & humidity variations

 Specifications

• Operating Frequency: 24GHz

• Detection Range: Up to ~5 metres (configurable)

• Detection Type: Presence, motion & micro-movements

• Supply Voltage: 5V DC

• Interface: UART (Serial)

• Antenna: Integrated PCB antenna

• Operating Temperature: -40°C to +85°C

• Power Consumption: Low-power operation

Applications

• Smart home automation

• Occupancy detection

• Security & intrusion monitoring

• Lighting & appliance auto-control

• Elder care & health monitoring

• Office & building automation

• Contact-free detection systems

 Package Includes

• 1 × HLK-LD2410 24GHz Human Detection Radar Sensor Module

Note: Images are for representation only. Actual product appearance may slightly vary.

Related Radar and UWB Products

Compare this module with related radar sensors, mmWave modules and development boards available from Robosap.

• Hi-Link HLK-LD2410C-P 24GHz Human Presence Radar Sensor
• HLK-LD1125H-24G 24GHz Human Presence Radar Sensor – FMCW Breathing and Motion Detection
• Ai-Thinker RD-61 60GHz FMCW mmWave Radar Sensor Module
• Browse all Radar and UWB modules

Downloads and Documentation

Use these manufacturer or reference documents to verify specifications, wiring, communication protocol, firmware support and installation requirements before designing your system.

• Hi-Link HLK-LD2410C documentation/product page
• Robosap Radar and UWB category

Documents may be updated by the manufacturer. Always confirm critical details with the latest official documentation before production use.

Product Disclaimer

Images are for representation only. Actual product appearance, PCB marking, connector style, antenna layout, colour, pin-header configuration or included accessories may vary depending on the available production batch. Product description information listed here is collected from different internet sources, manufacturer pages, datasheets and reference documents, and may contain mistakes or become outdated. Always verify critical electrical, mechanical, firmware and safety details from the latest official manufacturer documentation before design, production or field installation.

Radar, mmWave and UWB sensing performance depends on firmware, configuration, power supply quality, installation height, antenna direction, enclosure material, target size, target movement, reflections, interference, line-of-sight and surrounding environment. Distance, angle, accuracy and current values are reference values unless explicitly guaranteed by the latest manufacturer datasheet for the exact supplied revision.