Ozone Fresh Air Machine deodorizes, purifies and sanitizes the air! Excellent for cellars, cigarette smoke, bathrooms, pet areas, refrigerators, etc. Low cost forced air system produces over 30 mg/hr of air purifying ozone. The operating sound level is very quiet at about 30db, with only the running fan making a noise. Two-level output can be set to eliminate odors or just provide that fresh air outside smell. Operates from 12 vdc (runs on 115 vac with included wall adapter), using between 9 to 11 watts of power depending on setting. Size: 4 x 3.5 x 3" and weighs about 11 ounces.