CONCENTRATOR EVERFLO OXYGEN W/O OPI

EverFlo Concentrator. Input Voltage 120 VAC +/- 10%. Input Frequency 60Hz. Average Power Consumption 350 Watts. Oxygen Concentration* (at 5 LPM) 93% (+/- 3%). Liter Flow 0.5-5 liters per minute. Weight 31 lbs (14 kg). Sound Level 45 dBA typical. Dimensions (HxWxD) 23 in (584 mm) H, 15 in (381 mm) W, 9.5 in (241 mm) D. OPI (Oxygen Percentage Indicator) Alarm Levels Low Oxygen: 82%, Very Low Oxygen:70%. Operating Temperature 55°F to 90°F (12°C to 32°C). Storage/Transport Humidity -30°F to 160°F (-34°C to 71°C) up to 95% RH. Operating Humidity Up to 95% relative humidity. Outlet Pressure 5.5 PSI. Operating Altitude 0 to 7,500 ft (0 to 2,286 m). Packaging:1/Each.