... photocatalyst material, high efficiency, stable, can clean air and sterilize permanently.SpecificationRated Voltage 110V - 220VRated Frequency 50-60HZRated ... widely used in home (pregnant woman/baby/old man), villa, courtyard, apartment, golf course, holiday resort, park, hospital, pub, ... pollution, is not good for pregnant woman, baby and old man. If use the pesticide, mosquito incense or mosquito ...