The Indoor 7-Day Astronomical Timer is ideal for indoor lighting, lamps, and seasonal lighting, and is the perfect addition to any room. The Indoor 7-Day Astronomical Timer features sunrise and sunset technology to automatically turn lights ON/OFF within selected time range. With up to seven (7) individual program settings per day, you can set one or more ON/OFF schedules for each day of the week. Create daily cycles, weekday, and/or weekend schedules tailored to your specific needs, or use the Random feature to turn lights ON/OFF within programmed time window while you are away. The Indoor 7-Day Astronomical Timer includes two (2) grounded outlets to handle your heavy duty devices and simple, straight-forward programming.Rated for indoor use and compatible with CFL, LED, and incandescent bulbs. Maximize your energy savings and decrease your electricity costs by using power only when needed.