10X 24 GHz mmWave LD2420 Human Presence Radar Sensor Motion Detection Module Key benefits Detects human presence and motion reliably using 24 GHz mmWave radar technology, providing contactless sensing that works in dark, cluttered, or obscured environments. Compact sensor module simplifies integration into prototypes and products, reducing development time for occupancy sensing, motiontriggered systems, and smart automation. Ready for system integration with common microcontroller and development board platforms, enabling flexible use across electronics projects and embedded designs. What it does Provides human presence detection and motion detection using the LD2420 radar sensor operating at 24 GHz. Outputs motion and presence information that can be read and processed by host controllers to trigger actions or events. Why customers need this module Adds reliable presence sensing where cameras or PIR sensors are limited, such as areas with low light, through thin materials, or where privacy is a concern. Enables smarter control of lighting, HVAC, alarms, and interactive devices by providing timely and precise occupancy data. Offers a simple way to add radar sensing to prototypes and smallscale production without complex RF design. Standout attributes Model: LD2420 radar sensor module with 24 GHz mmWave operation. Pack of 10 modules for parallel deployment, multiple prototypes, or spare inventory. Form factor: compact PCB module ideal for embedding in enclosures or development rigs. Construction: printed circuit board populated with radar RF components and connectors for signal and power. Integration: designed for straightforward interfacing with microcontrollers and development boards using standard signal lines. Performance notes Designed specifically for human presence and motion detection tasks using mmWave sensing principles that are less affected by lighting conditions and some environmental obstructions. Suitable for integration where nonvisual, contactless detection is preferred. Practical applications Smart lighting automation: Automatically switch or dim lights when a person enters or leaves a room to improve convenience and reduce energy use. Security and access control: Supplement existing motion sensors to reduce false alarms and provide presence verification in corridors, entryways, and back rooms. Occupancyaware systems: Use in meeting rooms, restrooms, or retail spaces to monitor space utilization and trigger HVAC, displays, or notifications based on realtime presence. Integration tips Mount the module with clear line of sight toward the monitored area for detection performance. Interface with common microcontroller and singleboard computer platforms for data processing and system control. Use multiple modules in larger areas or complex layouts to achieve better coverage and localization. Package contents Ten LD2420 24 GHz mmWave human presence radar sensor motion detection modules on compact PCBs. This module pack is intended for engineers, makers, and integrators seeking a compact, radarbased solution for presence and motion detection without complex RF engineering.