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Body temperature � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 35
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Oxygen saturation (SpO2) � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 36
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Infrared temperature sensor � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 38
Photoplethysmography (PPG) sensor � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 40
Why inside the ear? � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 43
Application environment� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 45
In-ear sensor� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 49
Transport and storage environment � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 47
Mobile application � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 52
Charging and safe keeping � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 55
The charging box � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 56
The power supply and charging cable � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 57
Before initial operation � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 58
Initial operation � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 58
Apply the in-ear sensor to the ear � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 61
Table of conetent
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26
48
55
58
63
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