Once you place a scented oil bottle in this unit, you'll have adjustable, long-lasting continuous fragrancing. Use only in properly functioning 120V electrical outlet. Do not use with extension cord. Do not plug anything in above warmer. This model is without night light. Refer to model No. 6233878297 (lavender), 6233878669 (magnolia and cherry blossom), and 6233879716 (Fresh Waters ) for scented oil refill bottles.