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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!