Name: Portable Oxygen Analyzer Version: English Version Functions: Measure oxygen concentration, flow, and pressure Applications: This product uses ultrasonic technology to detect the concentration and flow of oxygen in gas. It is suitable for measuring the oxygen concentration, flow rate, and output pressure from oxygen generators. (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: 0–100 kPa Accuracy: ±1% Display: LCD Power Supply: 12V 1A Battery: 3000 mAh Color: As shown Material: Plastic Package Contents: 1 x Oxygen Analyzer (Due to different product batches, labeling on the product may vary but does not affect functionality) Only the items listed are included; other accessories are not included. Note: Lighting and display differences may cause slight variations in color between the image and actual item. Allowable measurement error is ±1–3 cm.