Finger Pulse Oximeter Model:CMS-50D Finger Pulse Oximeter Technical Parameters 1. Integrated with SPO2 probe and processing display module. 2. Can be used in: hospital, home, community medical treatment, sports healthcare, etc. 3.Can measure SPO2 and PR accurately 4. SPO2 and PR display, PR waveform and bargraph display 5. Battery voltage low indication 6. Four directions and six modes 7. Four levels adjustable brightness 8. Working current: =25mA 9. Resolution: SpO2: 1% Pulse Rate: 1bpm 10.Accuracy: SpO2: 70%to 100% (+, -)2digits, below 70% unspecified Pulse rate: (+, -)2bpm or(+, -) 2%(select larger) 11. Measurement at Low Perfusion: The values of SpO2 and pulse rate can be displayed properly when pulse saturation is at 0.4%. 12. Resistance to surrounding light: Deviation is smaller than 1% 13. Automatic shutdown function: The device will power off automatically within 5 seconds when there is no finger in the device. 14. When working, the display direction can be changed by pressing the button shortly. 15. There are six modes of direction. J. In working irem, long press can change the lighteness of the screen