... No.AT50Input VoltageAC110~240VPower <5WDimensions 110x80x90mmTime Control30 minutes/pressOzone Concentration50mg/h Effective Area10~30m2Ozone Discharge StyleCeramic ... , US CertificationCE, RoHS, WEEE Features1 Timing of 30 minutes sterilization to avoid you contact ozone directly.2 Humanized ... status.3. Timing: Automatically stops purification after 30 minutes operation, if you click the round button in ...