4
4.2. Main Parameters
A. Measurement of SpO
2
Measuring range: 0%
～
100
％
Accuracy:
When the SpO
2
measuring range is 70%
～
100
％
,the permission of absolute error is ±2
％；
below 70% unspecified
B. Measurement of pulse rate
Measuring range: 30bpm
～
250bpm
Accuracy: ±2 bpm or ±2% (select larger)
C. Resolution
SpO
2
: 1%, Pulse rate: 1bpm.
D. Measurement Performance in Weak Filling Condition:
SpO
2
and pulse rate can be shown correctly when pulse-filling ratio is 0.4%. SpO
2
error is ±4%,
pulse rate error is ±2 bpm or ±2% (select larger).
E. Resistance to surrounding light:
The deviation between the value measured in the condition of man-made light or indoor natural light
and that of darkroom is less than ±1%.
F. Power supply requirement: : 2.6 V DC ~ 3.6V DC.
G. Optical Sensor
Red light (wavelength is 660nm
，
6.65mW)
Infrared (wavelength is 880nm, 6.75mW)
H. Adjustable alarm range:
SpO
2
：
0%~100%
Pulse Rate: 0bpm~254bpm
5. Installation
5.1. View of the front panel
Figure 2.
Front View
