Oxygen flow: 0-3, 0-5, 0-8, 0-10L/min for single flow Purity: 93%±3% Outlet pressure (Mpa): 0.04-0.07 Sound level: 50dB Power: AC220±10%50/60±1Hz AC110±10% 50/60±1Hz (different country or area has different require) Power: ≤480W Timer: to record the total accumulated time of the unit operates Alarm: Power failure alarm, High & Low pressure alarm Net weight: 27kg for JAY5A (single & double) Size (mm): 365*375*600mm ALTERNATIVELY: -Nebulizer -High temperature alarm -Temperature alarm -Purity alarm: (Oxygen purity monitoring: When purity is above 85%, it will give green light; when the purity is between 85% and 73%, it will give yellow light; when purity is below 73%, it will give red light) -Pulse Oximeter: Fingertip oximeter is available for monitoring patient oxygen saturation on site (Alternatively)