From the producer automatically at dusk … dawn. Define the Christmas lights, flood lights or other electrical appliances turning points at sunset … off at dawn for a predefined number of hours of 2-8. The sequence is repeated every day or evening with manual settings as well. This Release Automatic Outdoor Sensor Timer 3 is perfect for outdoor lighting, lighting, sprinklers, pumps, outdoor and more … automatically DuskOff at Dawn. Define the Christmas lights, flood lights or other electrical outlets. Duskoff dawn to put it into a predetermined number of hours of 1-8. The sequence is repeated every day or evening with manual settings as well. This Release Automatic Outdoor Sensor Timer 3 is perfect for outdoor lighting, lighting, sprinklers, pumps and outdoor photocell that turns the unit at dusk and off at dusk off at dawn or dusk until 8 o'clock. It can also be activated / deactivated manually