In addition to copying large ceiling lamps and ordinary lighting lamps in the living room space, you can also add some small crystal chandeliers to adjust the atmosphere. Even at home, you can also taste the romantic hotel. Different shapes can also have different effects. The effect of this effect depends on the style of the crystal chandelier we choose. If you want to have the effect of decorating the home during the day, it is to choose some more beautiful, colorful colors can make your surroundings more vibrant. The chandelier of the crystal chandelier refracted the sunlight entering the house and spilled on the floor, one by one. This has the dreamy warmth of the night, night is daytime, daytime is night.

House lighting seems to belong to an object that does not occupy a large area in the home environment, but there are many requirements for the home environment, installation location, and even the home lighting itself during installation. Only when these conditions are met can the home lighting be regulated.

The application of IoT (Internet of Things) has been expanded to a greater level to construct “smart city” for safety and energy saving purposes. Public lighting, as part of the infrastructure of cities, is included in the smart city projects in Switzerland and the U.S. In St. Gallen, a City of Swit