24GHz mmWave Human Presence Radar – 6m

The 24GHz mmWave Human Presence Radar Sensor is a high-sensitivity FMCW radar module designed for accurate indoor human presence detection. It can detect both moving and stationary human targets and estimate their distance within a sensing range of up to 6 m. Operating independently of environmental factors such as light, temperature, or humidity, the module provides reliable detection even when installed behind non-metallic enclosures. With UART and GPIO outputs and configurable sensing parameters, it integrates easily with platforms such as Arduino, ESP32, and other embedded controllers for automation and smart sensing applications.

Features

- 24GHz mmWave FMCW radar sensing technology

- Detection of moving and stationary human presence

- Maximum sensing distance up to 6 m

- Wide detection angle of ±60° (120° total)

- Distance measurement output capability

- High immunity to light, temperature, and humidity changes

- Penetrates plastic or non-metal enclosures

- Configurable sensing distance and sensitivity intervals

- UART serial communication interface

- GPIO high/low level detection output

- Compact narrow module design for embedded installation

- Real-time presence detection output

- Suitable for smart automation and security systems

Specifications

- Operating Voltage: 5V–12V DC

- Operating Frequency: 24GHz – 24.25GHz

- Modulation Mode: FMCW

- Average Operating Current: 80mA

- Detection Distance: 0.75m – 6m

- Blind Zone Distance: 0.3m

- Detection Angle: ±60° (120° total)

- Distance Resolution: 0.75m

- Sweep Bandwidth: 250MHz

- Communication Interface: UART & GPIO (3.3V logic level)

- Default Baud Rate: 57600

- Operating Temperature: ?40°C to 85°C

- Module Dimensions: 7mm × 35mm

Links

- 24GHz mmWave Human Presence Radar Datasheet

Human Presence Sensing Module HLK-LD2410 + ESP12E

Tutorials

439 24GHz Radar Presence Detector that Works (LD2410)