Technojet is a newly-designed jet nebulizer capable of delivering any medication in a fast and efficient way. The selector consents to change particle dimension reaching different areas of the respiratory tract as follows: * Pos. 1: particles with diameter between 1 and 5 micron reach the alveoli. * Pos. 2: particles with diameter between 6 and 9 micron reach lower airways (tracheobronchial tract). * Pos. 3: particles with diameter over 10 micron reach upper airways (nose, larynx and trachea). The selector permits to choose particle dimension with an easy move, avoiding interchanging parts. Thanks to the reduction of wasted medication, technojet is also recommended for severe respiratory disorders such as copd or asthma, when expensive medications are prescribed or for intensive use in general.