The Hi-Link HLK-LD2450 24GHz Trajectory Detection Radar Sensor is an intelligent 24GHz millimeter-wave radar module designed for real-time moving-target detection, positioning, and tracking. It uses FMCW radar technology, intelligent signal processing, and integrated transmitter/receiver antennas to detect moving targets up to 6 meters. The module provides serial-port detection data and offers plug-and-play integration with microcontrollers and IoT systems. Ideal for smart homes, offices, hotels, security, automation, robotics, and human-tracking applications.