Name: Portable Oxygen Analyzer Version: English Version Functions: Measure Oxygen concentration, flow, pressure Applications:This product adopts the ultrasonic principle to detect the concentration and flow of oxygen in the gas,It is suitable for detecting the concentration and flow rate of oxygen output from oxygen generator and the output pressure (1) Flow detection Range: 0 to 20.0 L/min Resolution: 0.1 L/min Accuracy: 5% F.S ( 0.2 L/min.) whichever is greater (2) Concentration Measurement Range: 21% to 95.6% O2 Input: oxygen generator output gas Resolution: 0.1 % Accuracy: 1.5% (3) Pressure Detection Range: 0-100KPa Accuracy: 1 % Display: LCD Power supply: 12V 1A Battery: 3000mAh Colour:As Shown Material:Plastic Package Contents: 1 x Oxygen Analyzer(Due to different product batches, the words on the product may be different, which not affect the use) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.