The device can produce Oxygen up to 5 liters/min and the flow can be adjusted from the panel mounted Flowmeter that can be controlled by the increments of 0.5 liters/min value. There is also a back-up system of aluminum cylinder that can be used where incase (even tough rarely seen) a very high flow (maximum 15 liters/min.) is needed or paramedic action has to be taken outside the Ambulance and also incase of any possible malfunction of the device or even Ambulance itself. The Aluminum Oxygen Cylinder integrated to the system and has a water capacity of 2.80 liters and has to be refilled time after time but naturally at very long periods. As it is a very well known fact that, the ventilators or resuscitators that are used at Ambulances are triggered from the Oxygen Cylinders due to their being high pressure sources. But this system also have the risks of getting emptied at long distance transports, possible leakage at the systems or even finding empty cylinders could create problems. Even the left Oxygen is enough for the Oxygen therapy, but could not trigger the Ventilators or resuscitators.