Flow: 1-5LPLM Purity: 5L @93% Power: 300VA Input: 220V 50HZ Noise: 51dB Weight: 19kgs Sizez;41*28*51cm 1. Atomization build-in 2. Large oxygen flow supply to meet daily demand 3. Multiple filter protection for oxygen safety 4. Imported oil-free compressor with USA technology 5. French imported molecular sieve 6. Smart self-diagnostic with multiple alarm system