Can you use dusk to dawn blulbs in this fixture?

Hello Angela, We do not test specialty bulbs, so we cannot guarantee it will work with the Sebring 1 -Light 11.25-in Distressed Copper Outdoor Integrated LED Flush Mount Light. We have have no data to suggest a dusk to dawn bulb would not work. The bulb would be completely enclosed in the shade, so if its sensing window is covered by the shade, an extension may be needed. If you are looking to add a sensor to the exterior of the fixture, just a reminder any alterations to the fixture will void the warranty and safety ratings. Technically speaking, a sensor should not interfere with the operation of the fixture. Thank you for your interest in Generation Lighting!