It can be caused by the low sensitivity in the camera detection settings and you can customize the settings in the Mi Home APP to adjust the sensitivity.
1. High sensitivity: the coverage is about 7 meters;
2. Medium sensitivity: about 5 meters or so;
3. Low sensitivity: about 3 meters.
At the same time, the camera will detect the alarm video after some time after recording. To reduce the frequency of video push (to prevent disturbances), you can also choose a different interval time. Mainly because the camera uses the lithium battery as an energy supply, hope you can use it for a longer time after one charge, and also can meet the basic security needs before setting the interval time.