Input DC1.5V to DC28V & AC100V to AC 220V Output -2KV-15KVDischarge style Carbon fibre brush or stainless metal pin N-Ion Density 3x10 6 -12x10 6 EMC Meet with EMC international standards FunctionAir purification, dusts collection, eliminate smoke, release from fatigue,prevent from air-conditioner disease, adjust sleeping level Application: Air conditioning, refrigerator, air purifier, humidifier, hair drier, electronic fan, warm fan, dusts collection, duct system and etc.