Freshmatic Mini Starter Kit includes everything you need to freshen an entire room. Odor detection technology neutralizes odors with a burst of fragrance when odor is detected and continuously releases the scent of every 9, 18, 27 or 36 minutes. Time-released fragrance provides up to 60 days of continuous air fragrance with timed setting. Timer-switch is battery-powered. Dispenser is also equipped with an express button to provide an immediate release of fragrance as needed. Starter kit includes wall mountable spray unit, one can of Fresh Breeze fragrance, and three AA batteries.