Nano TiO2 photocatalyst nickel media filter Functions: Generates perhydrol (H2O2) and hydroxyl (OH) under the irradiation of UV light Sterilizes and decomposes harmful compounds With 3D Nano structure: 20 times more contact area than ordinary photocatalyst filter With ultraviolet (UV) lamp: activates photocatalyst oxidation (PCO), sterilizes air (recommended to be replaced every 15,000 hours) Charges particulates negatively, which will be adsorbed to the electro-positive dust collector (no replacement cost, easy to clean, and powerful dust-collecting ability) Dust collector: collects particulates, and kills bacteria with high voltage electricity Negative ion generator: diffuses negative ions into the flow of clean air. (Ion density: >100,000/cc; gives you a living place abundant in negative ions)