Intuitive interface that is easy to understand, easy to see. The function can be turned on and off with a large button. In emergency, you can quickly and reliably turn on / off the function. You can choose from multiple colors. I also make it a design layout that will make sense as soon as I see it. You can adjust the color depth with the knob. I devised a place on the knob. It is limited to those in the list, but you can select your favorite illustration to make it a knob. This illustrat