Hysan Solo cartridge Dispenser has a unique computer controlled fan that will only go off a little when the cartridge is new. As the cartridge ages the fan goes more and more conserving the cartridge for a least 60 days. Uses Hysent’s unique dry refills that can’t spill like gel dispensers. Can be used anywhere in any orientation. Mount on the wall with the included bracket or leave it as a portable desk system that can me moved freely from space to space. Services up to 220sq/ft. We stock only the black color. Uses 2 C batteries that are not included.