Introduction

A pulse oximeter is a medical device that indirectly measures the oxygen saturation of a patient's blood (as opposed to measuring oxygen saturation directly through a blood sample) and changes in blood volume in the skin， producing a photoplethysmograph.. This portable， battery-operated pulse oximeter also displays the heart rate.

Why do we need this

The pulse oximetry normal values are dependent on your health condition， respiratory rate， percentage of oxygen in the air， activities you are performing， and other factors. For a regular healthy person， the normal blood oxygen saturation level (SpO2) should be around 94% to 99%. For patients with mild respiratory diseases， the SpO2 should be 90% or above. Supplementary oxygen should be used if SpO2 level falls below 90%， which is unacceptable for a prolonged period of time. Medicare will pay for oxygen supply if your reading is below 88%. If you fall into this abnormal range， consult with a doctor immediately. Many doctors want their patients to have their SpO2 above 90%.

How Does Pulse Oximetry Work?

A pulse oximeter， usually attached to the finger， shines two separate light beams into the blood circulating in the small vessels， i.e.， capillaries. These light beams reflect the amount of oxygen in the blood， expressed as a percentage， along with the pulse rate. Oxygen saturation (SpO2) measures how much oxygen the blood is carrying. - See more at:http://homecaremag.com/senior-care-products/abcs-pulse-oximetry#sthash.VjlYEEub.dpuf

Features

. Integrated with SpO2 probe and processing display module
. Small in volume， light in weight and convenient in carrying
. Operation of the product is simple， low power consumption
. SpO2 value display
. Pulse rate value display， bar graph display
. Pulse waveform display
. The display mode can be changed
. Screen brightness can be changed
· Low-voltage indication: low-voltage indicator appears before working abnormally which is due to low-voltage
· Automatically power off function: when the device is under the state of measuring interface 
. it will automatically power off within 5 seconds if the finger falls out of probe.
. Display format can be saved after power off
. CE and FDA approved

Specification

.  Display Mode：0.96" Dual-color OLED display(blue and yellow) 
.  Screen Resolution：96*64 
.  SpO2 Measuring Range：0%～100%， (the resolution is 1%)
.  Accuracy：±2% ，Below 70% unspecified
.  PR Measuring Range：30bpm～250bpm， (the resolution is 1bpm) 
.  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%
.  Power Consumption：less than 30mA 
.  Voltage: DC 2.6V~3.6V
.  Power Supply:1.5V (AAA size) alkaline batteries × 2 
.  Battery working hour: Theoretical number is 32 hours. 
.  CE and FDA approved

Specification: