The heat waves of the summer of 2017 caused more than 3000 deaths in France alone. Therefore, this is designed to install in all parts of Europe to reduce the risk, regardless of indoor or outdoor. The light sensor sends a computer signal to the device through the outdoor or indoor light analysis. After the cross-analysis, the size of the pore opening is determined so that suitable light will enter and the unnecessary or excessive photometry will be masked to reduce the carbon emission of the air-conditioning. This is designed to achieve the function of both energy saving and carbon reduction.