? HLK-LD2401 24GHz Human Presence Radar Module

The HLK-LD2401 is a high-sensitivity 24GHz radar module developed by Hi-Link Electronics for detecting human presence. Utilizing FMCW (Frequency-Modulated Continuous Wave) technology, it can accurately identify motion, micro-movement, and stationary human bodies within its range. Ideal for smart automation, energy saving, and safety systems.

✨ Key Features

• 24GHz ISM band millimeter-wave radar (FCC & CE certified)
• Maximum detection range: 6 meters
• Configurable distance resolution: 0.2m or 0.75m
• Wide detection angle: ±60°
• Supports division of sensing zones and interference shielding
• Real-time motion and micro-motion detection
• Bluetooth & UART interfaces for parameter tuning and control
• Visual configuration tool for adjusting sensing range and sensitivity
• Supports wall-mount and ceiling installation
• Ultra-low power design, plug & play capability

?️ Advantages

• Detects sitting, lying, or stationary humans—unlike PIR sensors
• Unaffected by environmental conditions (light, temperature, humidity)
• Works hidden inside enclosures (no need for external holes)
• Highly configurable sensing zones and thresholds
• Bluetooth configuration via mobile app—no physical connection needed

? Applications

• Lighting automation: Turn on/off lights based on human presence
• Advertising displays: Wake-up on human detection, sleep when idle
• UV lamp protection: Prevent UV exposure when humans are present
• Hazard zone monitoring: Alert if someone enters dangerous areas (e.g., mines)
• Smart appliances: Automatically power off unused devices like TVs and ACs
• Security systems: Detect intrusion or prolonged presence
  
   
• 

? Package Includes

• 1 x HLK-LD2401 24GHz Human Sensing Radar Module