This model has a huge advancement in design. Its particular inside design idea and advanced design principle is never seen in other models. This model is totally considering person’s requirement. Comparing with the character of the low sound of the origin model, this new model has much lower sound (sound =40dB).This can help you inhale oxygen quietly while sleeping; even you can never feel its existence when you use it during night. Not only make the advanced inside design, but also make great changes to its appearance. At the same time, the use of pleasant design can help people to see its working condition easily. This model also has the characteristic of high efficiency and economization and beautiful appearance. It’s especially suitable for families and small and medium-sized medical institutionsRated Flux (L/min)3， 4 ，5 ，6Oxygen Content (%) 90±3Outlet Pressure (MPa) 0.04-0.06Voltage AC 230V/220V/115V/110VFrequency 50Hz/60HzSound Level (db) ≤40 ≤48Nebulization Rate (ml/min) ≥0.2Input power (W) 380 400Weight (Kg) 23， 23.8， 24.3， 26Dimension (mm) 390×375×690Optional Function Remote Controlï¼› Adjustable Timerï¼› Liquid Crystal Display Deviceï¼›Multiple flow; Oxygen Display; High or Low pressure Display Device.