The building could exhausting hot airs by opening high windows or skylight electrically and inducing cool air from lower windows. Therefore, we could reduce air conditioner dependence. With the help of Automatic Window Openers, it becomes easier for people to open windows. Therefore, the usage rate of high windows will largely improve. People could get fresh air into their houses by just one button. You may operate the windows manually, or setting your scenery on additional Wi-Fi Modular.