Power Source:Electric Material :Acrylic, Metal, Plastic, Steel, Resin Shelf Life:2 years Quality Certification:CE Instrument classification:Class II Safety standard:CE/ISO13485/ISO9001 Product Name:5L adjustable dedakj portable oxygen concentr medical oxygen generator Safety standard:GB2626-2006 Functions:Oxygen generator, SOS function Noise54db Product size: 21.97*11.02*13.38in Oxygen Concentration:30%-90%(±3%) adjustable Instrument classification:Class II Feature: 0.5L/min-5L/min 90%-96%(V/V) Voltage: 220 V/50 Hz ,110V/50Hz Packaging and delivery Packaging Details:carton packaging + (if necessary: wooden shelf packaging) Can also be packaged according to customer requirements Port:Tianjin/Qingdao/Guangzhou Capacity (oxygen flow):0.5L~5L/min Purity:93%±3% (1LPM) Sound level:45db Operation model:Touch screen/remote control Nebulization function:Alarm fliter-dirty alarm, power failure alarm, low flowrate alarm, overheating stop alarm, LED display. present working time, total working time,presetting time, purity data, flow rate data