| Real voice function |
| LCD screen |
| Remote control function to operate remotely |
| Cumulative timer to show total working time by the display |
| Single timer for real-time control once oxygen inhalation time |
| Timed shutdown function for easy use |
| Calendar function and more intuitive master of time |
| Button with back-light for clear and intuitive function display |
| Power-off alarm function |
| The function of releasing anion |
| Heat protector equipped in the compressor |
| Nebulization function (for models with nebulization functions) |
| Oxygen concentration monitoring and alarming |
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