The 9F-5AW Oxygen Concentrator has a built-in pulse-oximeter with retractable cable and a large back-lit LCD screen for continuous monitoring of oxygen saturation of the patient. The back light has adjustable brightness for comfort. It has a nebulizer outlet, built-in timer and includes a remote control for easy control by the patient. The flow meter is also back-lit. This model features a self-diagnosis system and comes with multiple safety alarms. The precision compressor is made with German technology and has a service life of over 30,000 hours. The air inlet is situated at the top of the unit to reduce intake of dust particles and improve longevity.