Introduction CMS50N Pulse Oximeter is a portable equipment adopting advanced technology, it mainly checks SpO2 and PR value through the finger, which provides advanced, non-invasive and scientific means for quantitative measurement of oxygen saturation. CMS50N Pulse Oximeter is applicable for use in plateau area, community healthcare, oxygen bar, Fitness clubs, physical training room, family and medical institution, etc. Main Features Can measure SpO2 and Pulse Rate accurately SpO2 and Pulse Rate display,Pulse Rate waveform and bar graph display Battery voltage low indication Four directions and six modes Screen brightness adjustable Shut off automatically when no signal