Hi-Link LD2402 Microwave Radar Sensor Module

The Hi-Link LD2402 Microwave Radar Sensor is a compact 24GHz mmWave human presence detection module designed for accurate motion, micro-motion, and static human presence sensing. Unlike traditional PIR sensors, the LD2402 can detect even slight body movements, making it ideal for smart automation and occupancy sensing applications. With UART and GPIO support, adjustable detection parameters, and a wide sensing angle, it is perfect for DIY electronics, IoT, smart home, and industrial projects.

Key Features

• 24GHz Microwave Radar Technology for precise human detection
• Detects motion, micro-motion, and static presence
• Wide sensing angle: up to ±60° coverage
• Presence detection up to 5m, motion sensing up to 10m
• UART & GPIO interface support for easy integration
• Adjustable sensing range, trigger, and hold thresholds
• Strong anti-interference performance
• Supports ceiling and wall mounting
• Compact 20 × 20mm module design
• Low power consumption for embedded applications

Specifications

• Model: Hi-Link LD2402
• Technology: 24GHz Microwave / mmWave Radar Sensor
• Frequency Range: 24GHz – 24.25GHz
• Modulation Mode: FMCW (Frequency Modulated Continuous Wave)
• Detection Distance:
  • Presence Detection: Up to 5m
  • Motion Detection: Up to 10m
• Detection Angle: ±60°
• Operating Voltage: 3.3V / 5V Compatible
• Typical Current Consumption: ~50mA
• Output Interface: UART / GPIO
• Working Temperature: -40°C to +85°C
• Module Size: 20 × 20mm
• Output Data Format: Serial ASCII / Digital Output

Applications

• Smart Home Automation
• Human Presence & Occupancy Detection
• Automatic Lighting Systems
• Smart Energy Saving Devices
• Security & Monitoring Systems
• IoT & Embedded Projects
• Office / Room Occupancy Sensing
• DIY Electronics & Robotics Projects

Package Includes

• 1 × Hi-Link LD2402 Microwave Radar Sensor Module