This small air purifier does what he should do, he cleans the air in 4 ways. 1 air filter (HEPA filter, activated carbon and photocatalyst filter) 2 UV lamp 3 Negative ions 4 Ozone Generator The unit has 3 stages and can be turned off to everything. At the lowest level, the device is not very loud and you can sleep. The delivery has been very fast, super easy and understandable assembly instructions. I would not want to miss this device.
