LD2412 is a high sensitivity 24GHz human presence sensing module developed by . Its working principle is to use FMCW FM continuous wave to detect the human body target in the set space, combined with radar signal processing and accurate human body sensing algorithm, to achieve highly sensitive human presence state sensing, can identify the human body in motion and static state, and can calculate the distance of the target and other auxiliary information. This product is mainly used in indoor scenes, sensing whether there is movement or micromovement of the human body in the area, real-time output of detection results. The maximum sensing distance can reach 9 meters, and the distance resolution is 0.75m. Provide visual configuration tools, which can easily configure the induction distance range, induction sensitivity of different intervals and unmanned delay time, etc., to adapt to different specific application requirements. Support GPIO and UART output, plug and play, can be flexibly applied to different intelligent scenarios and end products. Due to different product batches, the appearance , which does not affect the use Colour:As Shown Material:PC Package Contents: 1x Human Presence Motion Sensor Module Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.