The developed controller is based on natural light intensity and human presence as the main input parameters of the controller. Automatic compatibility with manual controls is possible. When the natural environment light is strong enough, regardless of whether the person exists, do not turn on the lamp, in the natural environment light is weak, someone exists and more than a certain time, the controller automatically turns on the light, until the person leaves and then delays after a certain period of time to turn off the light.
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