Each refill provides continuous, room-filling fragrance for up to 30 days on low setting Easily adjust the fragrance strength to low, medium, or high For use with a Yankee Candle ScentPlug Refill Plug rotates to fit horizontal and vertical 120-volt electrical outlets Festive Decorative Design: Features an elegant evergreen pattern that adds a warm, seasonal touch while blending seamlessly with your home décor Enhance your home’s ambiance with the Yankee Candle Scent Plug Diffuser in Twinkle Home with Light Sensor. This elegant diffuser combines a warm and inviting fragrance with a light sensor that automatically adjusts the brightness of the built-in light to match the room’s lighting conditions. The sophisticated "Twinkle Home" design adds a touch of charm to your decor, while the efficient diffusion system provides consistent and even fragrance distribution. With adjustable intensity settings, you can easily customize the scent strength to create the perfect atmosphere in any room.