The interval time can be set as 10 / 20 / 40 minutes as your need; With a light sensor, the air freshener machine can identify daytime and night, 3 modes adjustable: 24 hours working/ day/ off. Suitable Aerosol Bottle Capacity: 300ml; Suitable Aerosol Bottle Size: 5.51 x 2.56 inch. Easy installation, unique wall mounted design, can be easily hang and placed on the desk, you can installs in minutes without tools. The air freshener dispenser is made of high quality PP material, sturdy and ; Automatically fragrance into room to purify air and remove smelly odor. Used for spraying fragrance automatically, no need manually, more convenient and labor saving. Widely used for your home, living room, bathroom, bedroom, hallways, kitchens, offices, schools, restaurants, hotels, public toilet, etc.