Specifications: Condition: 100% Brand New Material: Zinc Alloy, Chrome Plating Input pressure: <15Mpa Output pressure: 0.25Mpa Flow adjustment range: 1-10L/min Safety valve: 0.5Mpa automatic exhaust Imported thread: G5/8'' Export thread: M12x1Operation method: 1. Add distilled water to the humidification cup. The water level in the bottle should not be higher than the water line, but it should not be lower than the water line. It is forbidden to replace with saline. 2. Before inserting the inhaler into the oxygen supply terminal socket, first turn off the flow adjustment switch, and adjust the direction of the oxygen quick plug, then insert the quick plug into the oxygen supply terminal socket hole, when you hear the "click" sound and see the oxygen supply terminal. When the locking sleeve of the socket is automatically slid, the quick plug and the oxygen supply terminal socket are connected and locked. 3. Insert the oxygen pipe into the oxygen supply joint before oxygen supply, then turn the flow adjustment switch counterclockwise to open the origin, so that the float slowly rises (the scale line aligned with the center of the float is the flow reading, the unit is liter/min) The oxygen supply can be adjusted as needed.Package list: 1 * Medical Oxygen Machine (Gas Cylinder + Gas Meter) 1 * Instruction Manual 1 * Oxygen Tube