There is an optimization effect. When the sensor is set to high sensing sensitivity, it can detect even slighter movements. In some scenarios, it can optimize the effect of automatic determination of no one in certain minutes, which requires appropriate unmanned movement time. For example, the conference room space can be used with 5 minutes of unmanned movement. During the 5-minute period, although the human body does not stand and walk, posture adjustments, such as leaning over, turning sideways, or arm gestures when speaking, can be detected in high sensing sensitivity, thereby reducing the issue of accidentally turning off the light.