5L/min Adjustable Oxygen-Concentrator-Machine 90%-93% Purity For Household Use
Comprehensive Alarm System: Alarm for power failure, irregular pressure, and low O2 levels. O2 FLOW RATE：0.5-5L/Min (O2 Concentration of 93%±3% Constantly Maintained, Regardless of The Flow Rate, Whether 0.5L/Min or 5L/Min).