Breathe Cleaner, Healthier Air. Covers up to 42 m² UV-C Radiation (254 nm) for Germicidal Effect Four-Stage Filtration Clean Air Delivery Rate (CADR): Particles, 350 m³/h (206 CFM) True HEPA Filter Activated Carbon Filter Filter Replacement Indicator Three Airflow Modes On/Off Timer Child Lock Design The EZVIZ UV-C Air Purifier features a four-stage filtration system to purify and disinfect the air. The system comprises a pre-filter, a HEPA filter, an activated carbon filter, and a UV-C light, powerful enough to absorb, remove and neutralize harmful substances from the air you breathe.