Product introduction 
Finger Pulse Oximeter
Model: CMS-50DL Finger pulse oximeter

Technical Parameters
1. Display mode: LED display
2. SpO2 measuring range: 35%-100%
3. Pulse rate measuring range: 30bpm-240bpm
4. Pulse waveform display: Bargraph display
5. Low battery indication: LED display
6. Power supply Requirement: 1.5V(AAAsize) Alkaline Batteries*2;
7. Working current: <=25mA
8. Resolution: SpO2: 1% Pulse Rate: 1bpm
9. Accuracy: SpO2: 70% to 100% (+. -)2digits, below 70% unspecified Pulse rate: (+. -)2bpm or (+. -)2%(select larger)
10. Measurement at Low Perfusion:
The Values of SpO2 and pulse rate can be displayed properly when pulse
Saturation is at 0.4%.
Accuracy of SpO2: (+. -)4%
Accuracy of Pulse Ratio. 2BPM or (+. -)2% (Select Larger)
11. Resistance to surrounding light:
Deviation is smaller than (+. -)1% between value of Oxyhemoglobin measured in natural lighting indoor condition and present lighting sources and that measured in dark room.
12. Automatic shutdown function: The device will power off automatically within 5 seconds when there is no finger in the device.