Integrated Baseband, RF front-end, and Antenna; supports human presence detection, micro-motion detection, and high-precision distance measurements.; Built-in Arm Cortex-M4 MCU (STM32L431CBT6, up to 80MHz) with 128KB Flash & 64KB RAM for local radar processing.; Compact 39×39mm size with optimized antenna structure, delivering high gain and stable detection.; 3.3V IO power supply; supports UART/I2C/GPIO interfaces, outputting results via register protocol.; -40°C~85°C operating temp (suitable for industrial/harsh environments); supports behind-plastic/glass installation.