Enerna IoTech WIFI wireless wave radar human fall down alarm is a human presence/human fall detection alarm. It adopts a unique structural design, and adopts MCU intelligent analysis and processing, which ensures the product stability from the design. Based on frequency modulation continuous wave FMCW radar technology, it realizes personnel perception function in radar scanning area and not affected by temperature, humidity, noise, airflow, dust, light and etc, and suitable for harsh environments.