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Automatic shades provides a convenient way of controlling how much light comes through your window, and can automatically adjust to a particular height according to your settings, or automatically adjust to lighting conditions outside throughout the day. You can also control them manually from keypads or remotes. These are also battery powered, or they can be hard wired. The battery life is 3 to 5 years, they come in a variety of colors, styles and transparency levels, and can contribute to your energy savings by increasing the R-value with your windows. The R-value is defined as the amount of resistance the window has to passing heat.