Alarm for Abnormal Readings If your oxygen is lower or PR is lower/higher than the threshold, the WELLUE monitor will remind you with a buzzer and a corresponding readings flashing. (Because wearing it for a long time will cause pressure on your fingers, it is not recommended to wear it overnight.) Menu setting You can customize the abnormal value reminder range, measurement mode, and turn on/off the Beep sound while measuring on the oxygen level monitor. Low 02 level limit setting range: 85%~99%.Low PR limit setting range: 30~60bpm;High PR limit setting Store up to 12 groups of data in display screen You can observe your own historical data at any time to better understand your health with this oxygen level monitor. Free iOS/Android APP--- Vihealth Download the APP Vihealth in Google Play for Android, or in App Store for iOS.
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