Reference: RBD-3321
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The HLK-LD2401 is a high-sensitivity 24GHz FMCW millimeter-wave radar sensor module developed by Hi-Link Electronics. Designed for human presence detection, it can accurately recognize both motion and micro-movements (such as sitting, lying, or slight gestures) within its sensing area. Unlike traditional PIR sensors, the LD2401 performs reliably even in challenging environments with varying temperature, brightness, humidity, or lighting conditions.
Resources: https://drive.google.com/drive/folders/1lzr9p_PwXhF-kYRUyi09oY0CzpZk_lf3
The HLK-LD2401 is a high-sensitivity 24GHz FMCW millimeter-wave radar sensor module developed by Hi-Link Electronics. Designed for human presence detection, it can accurately recognize both motion and micro-movements (such as sitting, lying, or slight gestures) within its sensing area. Unlike traditional PIR sensors, the LD2401 performs reliably even in challenging environments with varying temperature, brightness, humidity, or lighting conditions.
With a sensing range of up to 6 meters and a configurable distance resolution (0.75m or 0.2m), this module is ideal for AIoT and smart automation applications. It supports UART and GPIO outputs, along with Bluetooth-based parameter configuration for flexible deployment.
Long Detection Range: Up to 6 meters
Configurable Resolution: 0.2m or 0.75m per gate, up to 8 distance gates
Wide Detection Angle: ±60° coverage
Accurate Sensing: Detects motion, micro-movements, standing, sitting, or lying human presence
Environmental Adaptability: Works in various lighting and temperature conditions
Shell Penetration: Operates through non-metallic enclosures for hidden integration
Flexible Setup: Supports top, wall, or embedded installation
Smart Tuning: Multi-level parameter adjustments via UART or Bluetooth app
Certified: Operates in the 24GHz ISM band, FCC & CE compliant
TX: Serial port send
RX: Serial port receive
OUT: Level output
GND: Ground
VIN: 3.3V power input (use regulated power supply recommended)
Smart Lighting Control: Automatic activation/deactivation of indoor lights
Advertising Screens: Wake-up displays when people are detected
Safety Protection: UV lamp operation protection, hazardous area alarms
Smart Home Automation: Auto power-off for TVs, ACs, or appliances in empty rooms
Security Systems: Intrusion detection, area monitoring, and stay detection
Operating Frequency: 24GHz ISM band
Sensing Range: Up to 6m
Distance Resolution: Configurable (0.2m / 0.75m)
Output: GPIO, UART, Bluetooth configurable
Detection Angle: ±60°
Power Supply: 3.3V (regulated recommended)
Certifications: FCC, CE spectrum compliance
Configuration Tool: PC visual tool or Bluetooth app
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The HLK-LD2401 is a high-sensitivity 24GHz FMCW millimeter-wave radar sensor module developed by Hi-Link Electronics. Designed for human presence detection, it can accurately recognize both motion and micro-movements (such as sitting, lying, or slight gestures) within its sensing area. Unlike traditional PIR sensors, the LD2401 performs reliably even in challenging environments with varying temperature, brightness, humidity, or lighting conditions.
Resources: https://drive.google.com/drive/folders/1lzr9p_PwXhF-kYRUyi09oY0CzpZk_lf3
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