Light control + time control + human body sensing. It sweeps twice a day. In the morning, when the sun comes out, the voltage of the solar panel of the cleaning machine reaches 5V, and the cleaning machine starts once. It moves 4 times in each round. When the sun sets, if the voltage of the solar panel of the cleaning machine is lower than 5V, it starts again, and it moves 4 times in each round. The magnetic sensing is synchronized in both directions. Delay 5 seconds before returning.