The SpO
2
and Pulse Rate
display instable
1. The finger is not placed inside deep
enough.
2. The finger is shaking or the patient
is moving.
1. Place the finger properly
and try again.
2. Let the patient keep calm
The device can not turn
on
1. The batteries are drained or almost
drained.
2. The batteries are not inserted
properly.
3. The device’s malfunction
1. Reinstall batteries.
2. Please contact the local
service center.
The display is off
suddenly
1. The device will power off
automatically if no signal is detected
within 5 seconds.
2. The batteries are almost drained.
1. Normal.
2. Change batteries.
11. Function Specification
Display Information Display Mode
The Pulse Oxygen Saturation（SpO
2
）
2-digit digital OLED display
Pulse Rate（bpm）
3-digit digital OLED display
Pulse Intensity (bar-graph) bar-graph OLED display
SpO
2
Parameter Specification
Measuring range
35%～100%, (the resolution is 1%).
Accuracy
±2% during 70%～100%.Below 70% unspecified.
Optical Sensor Red light (wavelength is 660nm)
Infrared (wavelength is 940nm)
photosensor
9
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