The units will have morning, mid-day, and evening settings, though that can be turned off manually if residents choose.
Recent research has emphasized the benefits of following circadian rhythms. In a 2013 study, scientists at the University of Colorado Boulder found that if you live by the sun's schedule, you are more likely to go to sleep at least an hour earlier, wake up an hour earlier, and feel less sluggish, because your internal clock and external environment are more in sync.