Measure 4 parameters of oxygen at the same time: purity, flow, pressure, temperature Flow range: 0-10LPM Purity range: 20%-95.9% Pressure range: 1-150kPa Temperature range: -20℃ to 50℃ Accuracy: ±1.8% Lithium Battery: 3.7V/2200mAh/USB-Type C Check concentration for any brands of Oxygen Concentrators