5 Liter Oxygen Concentrator - DeVilbiss Healthcare USA Features and Benefits Exclusive DeVilbiss Oxygen Sensing Device standard on every unit increasing accuracy and reliability for longer service intervals Noticeably quiet operation; 15% typical sound quality improvement Readily accessible patient controls and protected cannula fitting Recessed humidifier nook prevents damage Easy to assemble/disassemble two-piece cabinet for ease of maintenance Lockable flow meter Convenient top and side handles for easy transport Accommodates up to a 50-foot cannula Product Specifications Actual Product Weight: 36 lbs Electrical Requirements: 115VAC 60HZ Liter Flow: 0.5-5 LPM Oxygen Percentage: 1-5 LPM, 87% - 96% Decibel Rating: 50 dbA Operating Relative Humidity: 10-95 Percent Operating Temperature: 41 deg to 104 deg F Operating Altitude: 4000 M ...