Can this millimeter-wave radar sensor (SKU: SEN0395) be used through walls?

Our tutorial reveals a certain degree of penetrability for wood. However, the properties of electromagnetic waves dictate that the higher the frequency, the weaker its ability to penetrate through walls. Therefore, the 24 GHz mmWave possesses a certain degree of wall-penetrating ability, albeit not particularly strong. It is recommended to avoid thick obstructions as much as possible when using it.