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4.2 Over-limit indication and Beep Silence
When measuring, if SpO
2
value or pulse rate value exceeds the limit,
the device will beep automatically and the value which exceeds its limit
will flash on the screen (Refer to chapter 4 for the detailed information).
When the beep sound is activated by over-limit, it will become silent or
d-active at the following situations:
1. The SpO
2
and PR value return to normal range.
2. Press Display Key to mute. If this over-limit event persists, the Pulse
Oximeter will resume beeping automatically later in 2 minutes.
3. Remove the finger from the Pulse Oximeter or SpO
2
probe.
5. TECHNICAL SPECIFICATIONS
A. SpO
2
measurement:
dual-wavelength LED sensor with wavelength:
Red light: 663 nm, Infrared light: 890 nm.
Maximal average optical output power: ≤1.5mW
Measuring range: 35%~100%
Measuring accuracy:
≤ 3% for SpO
2
range from 70% to 100%
SpO
2
low over-limit: 90%
B. Pulse Rate measurement:
Measuring range: 30bpm~240bpm
Measuring accuracy: ±2bpm or ±2% (whichever is greater)
Pulse Rate over-limit: high over-limit: 120bpm; low over-limit: 50bpm
C. Perfusion Index (PI) Display
Range: 0.2%~20%
D. Audible & visual over-limit indication
When measuring, if SpO
2
value or pulse rate value exceeds the limit,
the device will beep automatically and the value which exceeds its
limit will flash on the screen. The Oximeter will shut down automati-
cally in 8 seconds with no signal.
E. Display: Color OLED Display
F. Power supply requirement:
2 x LR03 (AAA) alkaline batteries
Working voltage: 2.2V~3.3VDC
Operating current: ≤40mA
ENGLISH