The Fusion Metered Aerosol Dispenser provides a flexible way to fill your space with inviting fragrances. It uses both Fusion 3000 and 9000 refills as well as 30-day and 90-day for a wide array of personalized choices to cover 600 square feet. To ensure the right amount of fragrance for every different space, this air freshener offers three interval settings (7.5, 15 and 30 minutes) as well as time of day options (day, night and 24-hour). White finish fits most every decor. Use the included mounting options (screws, wall anchors and double-sided tape). The Fusion Metered Aerosol dispenser requires two AA batteries (not included).