The SunLight has all the features of the SunSaver controller. It also has a rotary switch that allows it to turn on the loads after dusk for 2, 4, 6, 8, or 10 hours. One option turns loads on at dusk, off and on again before dawn. In this configuration, you can choose the following settings (in hours): 3/off/1, 4/off/2, or 6/off/2. "On" from dusk to dawn is also possible. A test button turns light on for five minutes. 5-year warranty. Dimensions: 6.6" x 2.2" x 1.3".