24G Motionless Human Presence Sensor 7m Range AIoT Millimeter Wave Detection Module

Product Introduction The LD2402 is a stationary human presence sensor featuring simplified 24 GHz millimeter-wave hardware and intelligent firmware for detecting human micro-motions. The hardware includes a millimeter-wave sensor, a high-performance 24 GHz transceiver antenna, and supporting circuitry. It is highly sensitive to the human body. The algorithm uses millimeter-wave radar ranging technology and proprietary radar signal processing to detect motion, micro-motion, and precise human presence. The intelligent presence-sensing firmware is designed for indoor use to determine whether a person is moving, making subtle movements, or simply present in the detection area—updating results in real time. The maximum detection distance for a moving human is up to 7 meters. Sensing range, trigger thresholds, hold time, and reporting intervals can be configured. The HLK-LD2402 supports GPIO and UART interfaces and is plug-and-play, enabling flexible integration into various smart devices and applications. It also supports auto-calibration of detection thresholds, improving accuracy, simplifying installation, and facilitating large-scale deployment. Color: Blue Material: ABS Package Includes: - 1 x Human Presence Sensor Note: Actual product color may vary slightly due to lighting conditions and screen settings. Measurement tolerance: ±1–3 cm.