Description 1 HLK LD2420 is a high performance 24 GHz radar module with a send and receive antenna Its human body sensing algorithm adopts millimeter wave radar distance measurement technology and advanced proprietary signal processing technology of S3 series chips to achieve precise perception of movement micro movement and standing human body 2 HLK LD2420 is mainly used to detect whether there is movement or slight movement of the human body in the indoor scene perception area and refresh the detect results in real time It has a maximum sensing distance of 8 m for a moving human body It can easily configure the sensing distance range sensing sensitivity in different intervals and refresh time It supports GPIO and UART interfaces plug and play and can be flexibly applied to different smart scenarios and terminal products Features 1 Equipped with single chip intelligent millimeter wave sensor SoC and intelligent algorithm firmware2 Ultra small module size 20 mm 20 mm3 Load the default human sensor configuration plug and play4 24 GHz ISM frequency band certified by FCC CE and non committee spectrum regulations5 3 3 V power supply support 3 0 V 3 6 V wide voltage range6 Average operating current 50 mA7 The detect target is moving and micro moving human body8 Real time reporting of detect results9 Provide visualization tools to support the configuration of detect distance intervals setting sensitivity and result reporting time between partitions1