Timers represent points in time within a 24 hour period (i.e., 8:00AM, 9:25PM, 3:35AM). A timer can change the brightness (intensity) of each color of LEDs individually. Timers have a Ramp Period that defines how fast they set the new intensity. For example, setting a 60 minute Ramp Period means it takes an hour for the intensity to change from one setting to the next. If the White LEDs are at 0% (completely off) and the timer sets the Whites to 90% brightness with a Ramp Period of 120 minutes, it will take two hours for the lights to go from 0% to 90%.