The American-made Drive DeVilbiss 5-liter home oxygen generator (Compact 525 model), a medical device used to concentrate oxygen from the ambient air and deliver it to patients who require continuous oxygen therapy. Key specifications and features of the device: • Flow Rate: Supports a continuous adjustable flow ranging from 0.5 to 5 liters per minute. • Oxygen Concentration: Approximately 93% (± 3%) when used correctly. • Humidifier: Includes the green bottle shown in the middle, which is filled with distilled water to humidify the oxygen delivered to the patient, preventing nasal and throat dryness. • Oxygen Sensor (OSD): Features a built-in monitoring system that continuously measures oxygen purity levels and triggers audible and visual alarms in case of low concentration, power failure, or maintenance needs.