ST-X300 is a commercial fragrance diffuser designed for 300-1000m3. It adopts design of Acrylic panel and steel casing. There is a lock on the right side of the machine, you will see the intelligent LCD display after you open the door. Then you can set the working periods and scent intensity as you want. There is a strong pump inside the machine which can spread the scent to space quickly and evenly. If you are looking for a elegant and powerful commercial scent machine, this will be definitely the best choice !