HLK-LD2410C 24GHz FMCW Radar Human Presence Detection Module 6M

The HLK-LD2410C is a 24GHz FMCW radar sensor that detects both stationary and moving human presence up to 6 meters away. Unlike traditional PIR sensors that only detect movement, this module continuously monitors occupancy even when people are sitting, sleeping, or working without motion.

Core Detection Capabilities: The LD2410C provides 0.57-meter resolution with ±60° horizontal coverage, enabling precise distance measurement and zone-specific sensitivity adjustment. The 24GHz FMCW radar technology offers superior environmental immunity compared to PIR sensors, remaining unaffected by temperature changes and reducing false alarms from pets or moving objects.

Technical Specifications: Operating at 5V with 79mA average current consumption, the module communicates via UART at 2560 baud rate. The LD2410C variant includes Bluetooth Low Energy connectivity for wireless configuration using PC tools, web configurators, or mobile apps. GPIO pins enable standalone operation without requiring a microcontroller.

Integration & Compatibility: Fully compatible with ESP32, Arduino, and other microcontrollers through dedicated libraries. Supports OLED displays and configurable LED indicators for real-time status feedback. The module’s adjustable sensitivity allows zone-specific optimization for different detection requirements.

Applications: Ideal for smart home automation (lighting control, HVAC optimization), commercial energy management, security systems, healthcare patient monitoring, industrial safety, retail analytics, and occupancy-based automation. The stationary detection capability makes it perfect for bedroom monitoring, conference room management, and elderly care applications where continuous presence verification is essential.

Advantages Over PIR: Detects completely stationary occupants, enhanced human versus object discrimination, improved false alarm reduction, and superior performance in varying environmental conditions. The energy level detection feature provides signal intensity measurement for advanced presence analysis.

Configuration flexibility through multiple interfaces (PC tool, web browser, mobile app) enables graphical zone configuration and individual sensitivity adjustment for each detection range. The module’s low power consumption and compact form factor make it suitable for battery-powered and space-constrained applications.