Oxygen concentrator

Oxygen flow(L/min):0.5-5 LPM
Oxygen concentration(%):more than 90% +/- 3%
Oxygen delivery pressure(Mpa):0.04-0.05
Noise dB(A):less than 55
Electrical Rating: 115V 60Hz 4.3AMPS
Operating voltage Range:107-132VAC 60Hz
Operating Environment:10-35 degree 30%-75% relative humidity,non-condensing up to 7500 feet above sea level
Dimensions:28"H*17"W*15"D
Weight:52lbs
Sound level:52dBa
Class II Type B