Why is the motion alert often false alert, the alert will also be triggered when the person is not present?

Motion detection is the lens to capture the entire screen changes, in addition to the general picture of the baby, there are few other changes in the movement, but larger changes in lighting or other wind changes in the screen, will also cause interference with the motion monitoring, there are large fluctuations in the value of the movement, thus triggering an alert, if the alert is frequent you can adjust the sensitivity of the motion alert: go to the Menu > Alert Settings >, the sensitivity of the motion alarm will be turned down.