Yes, you can. Our Avalon Caged Wall Sconce accepts an E26 base light bulb maximum of 20 watts.NOTE: The Avalon Caged Wall Sconce Dusk to Dawn cannot accept a bulb that is Dusk to Dawn, since the fixture itself includes a dusk to dawn sensor and they would not function together. You only need the sensor on the wall sconce for Dusk to Dawn functionality.