... efficient product.Production Assessment certificate. oxygen concentrator(generator) OT Series Features:*Complies with the requirements of ISO- ... LCD for Type: OT-Star, OT-Elite.*Realtime oxygen concentration display for Type: OT-Elite, OT-Pro.*Air outlet ... (optional)*Intelligent fault diagonis.Specification* Model OT-Star, OT-Elite, OT-ProOperating System Timed Cycle/Rapid Pressure SwingPower ...