... American imported molecule sift helps produce pure oxygen.c. Oxygen density monitord. High and low voltage alarming ... Working Time 10,000 hoursAccessoryNebulizing Kit(optional), an oxygen cannula(180cm), a humidifier, anti-dust sponge( ... pc, 10cm)3. ApplicationSuitable for oxygen therapy or oxygen healthcare in family or care room in ... W. 26 KGS (KS-5E)Oxygen denisity monitoring oxygen concentrator 2012