1. With high sensitivity, it can detect changes in the infrared spectrum of human activities, so that the switch automatically turns on the load. During the delay time, if someone moves within the effective sensing range, the switch continue to turn on until the person leaves. The load is automatically turned off at the time, and the intelligent control function that the lights are on when people come, and the lights are off when people go. 2. The time-lapse color segmented toggle switch selection of this product is 16, 32, and 262 seconds. 3. The delay time is adjustable, and the required delay time can also be adjusted within the delay range at .