Home oxygen concentrator device from the model philips Respironics evreflp The device works to provide a continuous flow of oxygen at a rate ranging from 0.5 to 5 liters per minute It features a relatively lightweight design (about 14 kg) and is equipped with wheels for easy movement within the home The device includes visual and auditory safety indicators, including an alarm in case of low oxygen purity Contact number - ( Phone number appears when clicking the contact button )