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General Description

Thank you for purchasing the OX100 Fingertip Pulse Oximeter. This 

Oximeter can be used to measure your blood oxygen saturation (in 

% SpO

2

) and pulse rate in hospital or homecare. 

This Fingertip Pulse Oximeter features convenient operation and 

portability. Place one fingertip into the photoelectric sensor for 

diagnosis and the pulse rate and oxygen saturation will appear on 

the display. It has been proven in clinical experiments that it also 

features high precision and repeatability.

Package contents

1. OX100 Fingertip Pulse Oximeter

2. Quick operation guide

3. One AAA battery

Precaution for use

1. Read the manual carefully before use.

2. Pulse Oximeters are sensitive to motion artifacts. Keep hands 

still while taking a reading.

3. Pulse Oximeters require sufficient blood flow to obtain proper 

readings. Poor blood circulation can result in inaccurate readings. If 

your hands are cold or you have poor circulation, warm your hands 

by rubbing them together or use another method before attempting 

to obtain a reading. A tourniquet, blood pressure cuff or other blood 

flow hindrances may also result in inaccurate readings.

4. Fingernail polish or acrylic nails obstruct the light transmission 

and may also result in inaccurate readings.

5. Your finger must be clean for proper reading.

6. The Pulse Oximeter must be clean for a proper reading.

7. If a reading is different to obtain, switch to another finger or to the 

other hand.

8. The Pulse Oximeter will not alert you if your readings are out of 

normal range.

9. Explosion hazard: Do not use the Pulse Oximeter in an explosive 

atmosphere.

10. The Pulse Oximeter has no SpO2 alarms; it is not for continuous 

monitoring, as indicated by the symbol.

11. In order to ensure correct sensor alignment and skin integrity, 

the maximum application time at a single site for our device should 

be less than half an hour.

12. Operation of the Pulse Oximeter may be affected by the use of 

an electrosurgical unit (ESU).

13. Do not use the Pulse Oximeter in an MRI or CT environment.

14. The Pulse Oximeter is intended only as an adjunct in patient 

assessment. It must be used in conjunction with other methods of 

assessing clinical signs and symptoms.

15. Do not sterilize the device using autoclaving, ethylene oxide 

sterilizing, or immersing the device in liquid. The device is not 

intended for sterilization.

16. Follow local ordinances and recycling instructions regarding 

disposal or recycling of the device and device components, 

including batteries.

17. This equipment complies with IEC 60601-1-2:2007 for 

electromagnetic compatibility for medical electrical equipment 

and/or systems. However, because of the proliferation of radio-

frequency transmitting equipment and other sources of electrical 

noise in healthcare and other environments, it is possible that high 

levels of such interference due to close proximity or strength of a 

source might disrupt the performance of this device.

18. Portable and mobile RF communications equipment can affect 

medical electrical equipment.

19. This equipment is not intended for use during patient transport 

outside the healthcare facility.

20. This equipment should not be used adjacent to or stacked with 

other equipment.

21. It may be unsafe to:

—use accessories, detachable parts and materials not described in 

the instructions for use 

—interconnect this equipment with other equipment not described in 

the instructions for use

—disassemble, repair or modify the equipment.

22. These materials that contact with the patient’s skin contain 

medical silicone and ABS plastic enclosure are all pass the ISO10993-

5 Tests for invitro cytotoxicity and ISO10993-10 Tests for irritation and 

delayed-type hypersensitivity.

Inaccurate measurements may be caused by

1. Significant levels of dysfunctional hemoglobin (such as carbonyl - 

hemoglobin or methemoglobin).

2. Intravascular dyes such as indocyanine green or methylene blue.

3. High ambient light. Shield the sensor area if necessary.

4. Excessive patient movement.

5. High-frequency electrosurgical interference and defibrillators.

6. Venous pulsations.

7. Placement of a sensor on an extremity with a blood pressure cuff, 

arterial catheter, or intravascular line.

8. The patient has hypotension, severe vasoconstriction, severe 

anemia, or hypothermia.

9. The patient is in cardiac arrest or is in shock.

10. Fingernail polish or false fingernails.

11. Weak pulse quality (low perfusion).

12. Low hemoglobin.

Know your device

1. Displaying screen

2. Power button

3. Battery box cover

Battery Installation

1. Install one AAA battery into the battery compartment. Match the 

plus (+) and minus (-) signs in the compartment. If the polarities are 

not matched, damaged may be caused to the oximter.

2. Open the battery door as show in the picture.

Note:

The battery indicator symbol on front panel display will light when the 

battery voltage is too low for normal operation of the Pulse Oximeter. 

Replace the batteries when indicator symbol lights.

  

Warnings!

Keep the oximeter away from young children. Small items such as the 

battery door, battery are choking hazards.

Using the Oximeter

1. Place one of your fingers into the rubber opening of the Pulse 

Oximeter.

2. Press the switch button one time on front panel to turn the pulse 

oximeter on. The Bluetooth will turn on simultaneously.

3. Keep your hands still for the reading. Do not shake your finger 

during the test. It is recommended that you do not move your body 

while taking a reading.

4. Read the data from the display screen.

5. When no signal or low signal is detected, the Pulse Oximeter will 

power off automatically in 8 seconds.

Brief description of displaying screen

Power low indication

The height of the Pulse Bar graph indicates the intensity of the pulse 

and signal strength. The bar should be greater than 30% for a proper 

reading.

Sync

1. Tap the settings icon on the bottom of the screen. Choose “link or 

change the device”

2. Choose “iChoice OX100” and then turn on your unit. 

3. This will sync your device.

The measurements will automatically transmit to your iOS device. You 

can view and analyze your progress with charts and graphs. Compare 

and share goals and progress with friends and family. 

Maintenance

1. Clean the Pulse Oximeter and sensor with a soft cloth dampened 

with isopropyl alcohol. Do not pour or spray any liquids onto the Pulse 

Oximeter. Do not allow any liquid to enter any openings in the device. 

Allow the Pulse Oximeter to dry thoroughly before reusing. (The rubber 

inside of the Pulse Oximeter is composed of medical grade rubber. It is 

non toxic and is not harmful to the skin.)

2. The Pulse Oximeter requires no routine calibration or maintenance 

other than replacement of the batteries.

Service life of device

The use life of the device is five years when it is used for 15 

measurements every day and 10 minutes per one measurement. 

Specifications

1. Display Type

LED display

2. SpO

2

Measurement range: 70%~99% 

Accuracy: 70%~99%: ±2%; 0%~69% no definition

Resolution: 1% 

3. Pulse Rate

Measure range: 30bpm ~235bpm

Accuracy: 30bpm ~99bpm, ±2bpm; 100bpm ~235bpm, ±2%

Resolution: 1bpm

4. Probe LED Specifications

Wavelength

Radiant Power

RED

660±2nm

1.8mW

IR

940±10nm

2.0mW

5. Power Requirements

One AAA alkaline Battery

Power consumption: Less than 60mA 

Battery Life: One AAA 1.5V, 750mAh alkaline batteries could be 

continuously operated as long as 5 hours. 

6. Environment Requirements

Operation Temperature: 5

~40

Storage Temperature: -25

~+70

Ambient Humidity: 15%~93% no condensation in operation; ≤93% no 

condensation in storage

Atmosphere pressure: 86kPa~106kPa in operation

7. Equipment Response Time

As shown in the following figure.

Response time of slower average is 12.4s.

8. Classification

According to the type of protection against electric shock: 

INTERNALLY POWERED EQUIPMENT;

According to the degree of protection against electric shock: TYPE BF 

APPLIED PART (the rubber that the finger insert);

According to the degree of protection against ingress of dust and 

water: IP22

According to the mode of operation: CONTINUOUS OPERATION

9. Bluetooth

Transmission distance: 10m

Frequency: 2400MHz ~ 2483.5 MHz

Bluetooth version: 4.0

Declaration

Guidance and Manufacturer’s declaration – electromagnetic 

emissions-For all EQUIPMENT and SYSTEMS

Guidance and Manufacturer’s declaration - electromagnetic emission
The OX100 Pulse Oximeter is intended for use in the electromagnetic environment 

specified below. The customer or the user of OX100 Pulse Oximeter should assure 

that it is used in such an environment.
Emission test

Compliance

Electromagnetic Environment – guidance

RF emissions CISPR 

11

Group 1

The OX100 Pulse Oximeter uses RF 

energy only for its internal function. 

Therefore, its RF emissions are very low 

and are not likely to cause any interference 

in nearby electronic equipment.

RF emissions CISPR 

11

Class B

The pulse Oximeter (OX100) is suitable 

for use in all establishments, including 

domestic establishments and those directly 

connected to the public low-voltage power 

supply network that supplies buildings used 

for domestic purposes.

Harmonic emissions 

IEC 61000-3-2

Not 

Applicable

Voltage fluctuations/ 

flicker emissions

IEC 61000-3-3

Not 

Applicable

Guidance and Manufacturer’s declaration – electromagnetic 

immunity-For all EQUIPMENT and SYSTEMS

Guidance and Manufacturer’s declaration - electromagnetic immunity
The OX100 Pulse Oximeter is intended for use in the electromagnetic environment 

specified below. The customer or the user of the OX100 Pulse Oximeter should 

assure that it is used in such an environment.

Immunity test

IEC 60601 

test level

Compliance 

Level

Electromagnetic Environment – 

guidance

Electrostatic

Discharge (ESD)

IEC 61000-4-2

+/- 6kV 

contact

+/- 8kV air

+/- 6kV 

contact

+/- 8kV air

Floors should be wood, concrete 

or ceramic tile. If floor are 

covered with synthetic material, 

the relative humidity should be at 

least 30%.

Power frequency 

(50/60 Hz) 

magnetic field

IEC 61000-4-8

3A/m

3A/m

Power frequency magnetic 

fields should be at levels 

characteristics of a typical 

location in a typical commercial 

or hospital environment.

Guidance and Manufacturer’s declaration – electromagnetic 

immunity-For all EQUIPMENT and SYSTEMS that are not LIFE-

SUPPORTING

Guidance and Manufacturer’s declaration - electromagnetic immunity
The OX100 Pulse Oximeter is intended for use in the electromagnetic environment 

specified below. The customer or the user of the OX100 Pulse Oximeter should 

assure that it is used in such an environment.
Immunity 

test

IEC 60601 

test level

Compliance 

Level

Electromagnetic Environment – guidance

Radiated 

RF

IEC 

61000-4-3

3 V/m

80 MHz to 

2.5 GHz

3 V/m

Portable and mobile RF communications 

equipment should be used no closer to 

any part of the Pulse Oximeter (OX100), 

including cables, than the recommended 

separation distance calculated from the 

equation applicable to the frequency of the 

transmitter.

Recommended separation distance

 80 MHz to 800 MHz
 800 MHz to 2.5 GHz

Where P is the maximum output power 

rating of the transmitter in watts (W) 

according to the transmitter manufacturer 

and d is the recommended separation 

distance in meters (m).

Field strengths from fixed RF transmitters, 

as determined by an electromagnetic site 

survey

a

, should be less than the compliance 

level in each frequency range. 

b

Interference may occur in the vicinity of 

equipment marked with following symbol:

NOTE 1  At 80 MHz and 800 MHz, the higher frequency range applies.

NOTE 2  These guidelines may not apply in all situations, Electromagnetic 

propagation is affected by absorption and reflection structures, objects and people.
a  Field strengths from fixed transmitters, such as base station for radio (cellular/

cordless) telephones and land mobile radios, amateur radio, AM and FM radio 

broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess 

the electromagnetic environment due to fixed RF transmitters, an electromagnetic site 

survey should be considered. If the measured field strength in the location in which the 

Pulse Oximeter (OX100) should be observed to verify normal operation. If abnormal 

performance is observed, additional measurements may be necessary, such as 

reorienting of the relocating the Pulse Oximeter (OX100).

b  

Over the frequency range 150 kHz to 80 MHz, fields strengths should be less than 3 V/m

Recommended separation distances between portable and 

mobile RF communications equipment and 

the EQUIPMENT or SYSTEMS - For all EQUIPMENT and SYSTEMS 

that are not LIFE-SUPPORTING

Recommended separation distances between 

portable and mobile RF communications equipment and Pulse Oximeter (OX100)
The Pulse Oximeter (OX100) is intended for use in electromagnetic environment 

in which radiated RF disturbances are controlled. The customer or the user of 

the Pulse Oximeter (OX100) can help prevent electromagnetic interference by 

maintaining a minimum distance between portable and mobile RF communications 

equipment (transmitters) and the Pulse Oximeter (OX100) as recommended below, 

according to the maximum output power of the communications equipment. 

Rated maximum 

output power of 

transmitter (W)

Separation distance according to frequency of transmitter (m)

80 MHz to 800 MHz

800 MHz to 2.5 GHz

0.01

0.1167

0.2334

0.1

0.3689

0.7378

1

1.1667

2.3334

10

3.6893

7.3786

100

11.6667

23.3334

For transmitters rated at a maximum output power not listed above, the recommended 

separation distanced in meters (m) can be estimated using the equation applicable to 

the frequency of the transmitter, where P is the maximum output power rating of the 

transmitter in watts (W) according to the transmitter manufacturer.

NOTE 1 At 80 MHz and 800 MHz, the separation distance for the higher frequency 

range applies.

NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation 

is affected by absorption and reflection from structures, objects and people.

Possible Problems and Solutions

Problems

Possible reason

Solution

SpO

2

 or 

PR cannot 

be shown 

normally

1. Finger is not inserted correctly

2. Patient’s Oxyhemoglobin value is 

too low to be measured

1.Retry by inserting the finger

2. Try some more times. If you 

can make sure no problem 

exist in the product, please go 

to a hospital timely for exact 

diagnosis.

SpO

2

 or PR 

is shown 

unstably

1. Finger might not be inserted 

deep enough.

2. Finger is trembling or patient’s 

body is in movement status.

1. Retry by inserting the finger

2. Try not to move

OperatiOr's

manual

iChoice OX100

Fingertip Pulse Oximeter

Ver1.0

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