Starter pack includes dispenser and choice of fragrances. With a sleek and flexible design, the Air Fresh dispenser works in a variety of locations with flexible and easy to use programming options. The dispenser is fully programmable with a choice of 6, 8 or 12 refills per year and a choice of 5, 6 or 7 days of operation. Multiple program options combined with start and stop times ensures fragrance delivery during key hours of opening and operations. A quick programming button allows for a 24/7 fragrance for 30/45 or 60 days. I.P.E™ facility enables the user to program up to three periods per day of enhanced fragrance delivery. Required 2 x C cell batteries (not supplied).