DFRobot Gravity mmWave C4001 24GHz Human Presence Detection Sensor - 12m

This radar sensor module from DFRobot can detect human presence, motion and distance. Due to a difference in speed, this sensor can detect motion, this also works through almost all materials except metal. The UART or I2C interface can be used to read out the sensor and to adjust measuring settings.

See the following page for more information: GitHub

See the following page for more information: Wiki