... card large LCD 3L PSA oxygen concentrator (generator) OT-Pro for oxygen therapy, LTOT. Features:*Complies with the ... oxygen concentration*Information display: Color-LCD for Type OT-Pro.* Oxygen concentration indicatorGreen, yellow, red bar on the LCD ... Air outlet permits nebulizer treatments (optional) Specification* Model OT-Pro 3LOperating System Timed Cycle/Rapid Pressure SwingPower Consumption (W) ...