... light 4)Nano photocatalyst 5)Plasma generator 6)Ionize anion humidifier anion humidifier FEATURES of KJF20 SERIES:Pre-filter---Collect large dust ... substances such as mold fungus,viruses and allergens.Anion generator(KJF20B02,KJF20B06,KJF20B07,KJF20B08) ---Release a lot of ... the effect of electric field force.Ion generatorsNegative ion generator rises low voltage to negative DC high voltage, and ...