Technical data: Input power: 380VA Oxygen flow: 0.5~3L/min Oxygen concentration: 93%±3% Output pressure: 20~50kPa Operation noise: ?50dB (A) Positive intake, air cleaner, molecular sieve life longer More function: With time accumulating function, timing power off function, fault self-detection system. Four alarm functions: Power failure alarm Low oxygen concentration alarm Pressure cycle failure alarm Compressor failure alarm