Lookee LK-A2 User manual

Upper Arm Blood Pressure Monitor
Model: LK-A2
USER MANUAL
Subject to the actual product
• Thank you for using our product.
• Please keep this manual safe for future reference.
• Please read this manual carefully before using it.
Precaution:
Please read the instruction manual carefully before use it. If you have
any questions, please contact the retailer or ask your doctor.

3
CONTENT
1. Warnings and precautions ----------------------------- 4
2. Instruction ---------------------------------------------- 5
3. About Blood Pressure ---------------------------------- 6
4. Description of Product structure ---------------------- 9
5. Operation manual -------------------------------------- 9
6. Measurement of blood pressure ---------------------- 13
7. Error warning/Troubleshooting ----------------------- 18
8. Daily use and maintenance --------------------------- 21
9. Reference standard ------------------------------------ 22
10. Place in ----------------------------------------------- 22
11. Technical specifications ----------------------------- 22
12. List of attachment ------------------------------------ 24
13. Standardized symbolic description ----------------- 24
14. Electromagnetic compatibility information --------- 25

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1. Warnings and precautions
1.1 Warning
• This product is not suitable for newborns.
• When the measurement is complete, consult your doctor if you have any doubts
about the measurement results.Do not self-diagnosis and treatment according to
measurement results.
• When common arrhythmia (such as atria premature beats, premature ventricular
and atrial brillaon) occurs, it will aect the measurement accuracy of blood
pressure. If it is only sporadic, please take a rest for two hours before measuring.
If it is a frequent nature, please go to the hospital for conrmaon and treatment
immediately.
• If the airbag is inflated for a long time, immediately press the “START/STOP”
button to stop the measurement. Continued inflation presses the hand arm,
which can cause limb numbness.
• Do not allow children to use the instrument without authorizaon: Some small
parts may cause ingeson.
• It is forbidden to measure blood pressure on the side where the breast is
removed.
• Do not allow children to use instruments without permission:Small parts can
cause the risk of ingeson.Hose may cause choking hazar.
• Do not allow children to use instruments without permission: Smallparts can
cause the risk of ingeson.Hose may cause choking hazar.
1.2 Precauons
• Avoid high temperature, humidity, dust and direct sunlight.
• Avoid damage to the arm band and rubber tube due to folding
• Do not disassemble this unit yourself! Otherwise it will cause the manufacturer's
school pressure calibraon to fail!
• Avoid falling or violently vibrang the body.
• The normal measurement period is about 1 minute. If the measurement is
not stopped for a long time, please press the“START/STOP”button to stop the
measurement. Avoid numbness of the limbs due to prolonged compression of
the arm.
• Original or medically compliant power adapters (eg iec 60601-1 cered) must
be used, and non-original accessories may present unpredictable risks.

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• For beer reading of the display, please note the following visible condions:
• - Ambient brightness: 100lx~1500lx.
• - Line of sight: less than 30cm.
• - Viewing angle: normal display ± 30 °.
• Extreme temperature, humidity, and altitude conditions can affect the
performance of the measurement, and the sphygmomanometer may not meet
the stated performance specicaons.
• Do not put the cu on the wound, which will cause further damage.
• Do not measure blood pressure if there is intravascular access or treatment, or
arteriovenous (A-V) shunt.
• This equipment shall not be shared with high-frequency surgical equipment.
1.3 Purpose/intended use of device
Upper Arm Blood Pressure Monitor is intended to measure the blood pressure and
pulse rate of adults and children at least 12 years of age, at household or medical
center. (Not suitable for neonate, pregnancy or pre-eclampsia). with the cuff
around the left upper arm according to the instruction in the user's guide manual.
The patient is an intended operator
Intended operator should receive at least 8 years of education so that can read and
understand the user manual.
2. Instruction
2.1 Product Features
The LK-A2 is an Upper Arm Blood Pressure Monitor that simultaneously measure
systolic, diastolic blood pressure and pulse rate through the principle of pressure
oscillation.Not only its accuracy reaches the medical grade, but also suitable for
home health care. In addition, the humanized design provides users with the
greatest convenience.
2.2 Self -Measurement
• Please keep in mind :self-measurement is equal to self-control, not diagnosis
or treatment. If you have abnormal blood pressure, should consult physician
immediately and follow physician’s instrucons to take medicine.
• The pulse displayed by this unit is not suitable to be a xed frequency detector
that idenfy heart rate!

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• Those who have a history of heavier arrhythmia, should consult a professional
physician about measured blood pressure value and conrm.
2.3 Electromagnetic Interference
Due to the unit has sensitive electronic components, avoid using it directly in
strong electromagnetic environment (such as:mobile phone, microwave oven etc.),
as it may lead to inaccurate results.
3. About Blood Pressure
3.1 What is Blood Pressure?
Blood pressure (BP) is regulated by brain circulation center.Through the regulation
of nervous system,the body can adapt to or change blood pressure , so that make
different body parts corresponding reflected in different states.Human body
changes the blood vessel diameter and pulse via the changes of smooth muscle
of microvessels, thereby changing blood pressure. When heart contracts to apex ,
blood pressure shows the highest state , called systolic (SYS); when heart relaxes to
nadir , blood pressure shows the lowest state, called diastolic (DIA).
3.2 What is normal blood pressure?
If blood pressure value is too high during rest: diastolic pressure (DIA) exceeds 90
mmHg, and either systolic pressure (SYS) is higher than 140 mmHg. In this case,
please consult your physician immediately. Prolonged hypertension will damage
blood vessels and important organs such as kidneys and even the heart. Consult
your physician if systolic blood pressure (SYS) is between 140mmHg and 160mmHg
and diastolic pressure (DIA) is between 90mmHg and 100mmHg. In addition,
regularly self-measurement is also very necessary. Please consult your physician
when blood pressure value is too low, that is, systolic blood pressure (SYS) is lower
than 100 mmHg, and diastolic blood pressure (DIA) is lower than 60 mmHg.
It is necessary to use this sphygmomanometer for regular blood pressure self-
measurement even though your blood pressure is in the normal scope. Through
this method, you can find changes in blood pressure earlier and take appropriate
measures. If you are in the period of medication to control your blood pressure,
please self-measurement and record your blood pressure every day. And take the
records to your physician. Please do not privately change the prescription and
dosage prescribed by the physician according to your measurement .
The following is a standard taxonomy established by the World Health Organization
(WHO) for blood pressure, showed in the below table: Unit (mmHg)

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Scope Systolic (SYS) Diastolic (DIA) Corresponding measures
Hypotension <100 <60 Ask doctor for
measurement
Desirable 100~120 60~80 Self-measurement
Normal 120~130 80~85 Self-measurement
Pre hypertension 130~139 85~89 Self-measurement
Stage 1
Hypertension 140~159 90~99 Consult the doctor
Stage 2
Hypertension 160~179 100~109 Consult the doctor ASAP
Hypertensive
Crisis ≥180 ≥110 Danger! Please consult the doctor immediately
At the same time, the United Nations Committee on the Investigation, Evaluation
and Treatment of Hypertension in 1988 recommended that whether it is systolic
(SYS) or diastolic (DIA), average person must undergo at least three measurements
,further diagnosis is needed when blood pressure is found to be higher than the
normal level.
3.3 What measure should be taken when blood pressure is too
high or low?
a) Please consult physician.

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b) Prolonged ascending blood pressure (different types of SYS) will endanger
human health. Deposits on the walls of the blood vessels limit the ow of blood
(that can result in arteriosclerosis), which is very dangerous. Because it will
cause insucient blood supply to body’s important part (heart, brain, muscles
and etc.), even severely destroy the structure of heart.
c) There are many factors that cause high blood pressure. We could divide
them into common hypertension and secondary hypertension. Secondary
hypertension will lead to organ disorders. If your blood pressure value
connues to rise, ask physician about possible causes.
d) Changing your lifestyle also can prevent or lower hypertension, but this habit
must be a part of healthy life, including:
1) Dietary Habit
Maintain normal weight as guided by doctor. Do not eat too much salt, as many
"packaged foods" contain more salt. Avoid eating greasy food. (Packaged foods
usually contain large amounts of fat).
2) Preventing Diseases
Adhere to medical guidelines for preventing certain diseases, such as diabetes,
fat metabolic disorders and gout .
3) Living Habit
Don't smoke, avoid drinking too much or high concentration drinking; limit the
intake of caffeine (coffee, tea, chocolate and etc.)
4) Physical Exercise
After medical examination, carry out regularly physical exercise; choose the
sports program that requires endurance rather than strength. Please note that
do not exercise reaching your physical limit. Patients over 40 years old who is
with medical history, consult physician before you start to exercise.
Precaution: Consult your physician before using the device for any of the following
conditions: common arrhythmias such as atrial or ventricular premature beats or
atrial fibrillation, arterial sclerosis, poor perfusion, diabetes, old age, pregnancy,
pre-eclampsia, renal diseases. Note that PATIENT motion, trembling, shivering may
affect the reading.
The physiological status of the paents described above aects the blood pressure
measurement. The measurement site and measurement posture of the patient
can also affect the value of blood pressure, please see section 6 for the correct
method.

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4. Description of Product structure
A
ir socket
Memory
Start/Stop
Cuff diameter
(22-42cm)
5. Operation manual
5.1 Install the battery
After opening the package, firstly install the battery. The
battery case is located on the base of sphygmomanometer.
Process of battery installation is as follow:
• Remove baery cover
• Insert baery, and make sure the posive, negave pole
of battery are same as battery case 's positive, negative
pole.
• If LED displayed low baery signal, please replace new baery.

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Precaution
• Once the low baery signal is displayed, the unit will not be available unless
you replace new baery.
• Please use 4 standard"AAA", long-lasng alkaline baeries.
• Remove baery if the unit is to remain unused for an extended period.
5.2 Use adapter
Except the baery, this unit can also use a USB 5V adapter. Must use the original
or medical power supplies that meet medical standards. (example: IEC 60601-1
certification). Transformer connects to power socket is shown on the following.
Adaptor connects to the power socket of the product and press the [START/STOP]
[MEM] buon to test if it is power.

• Power source is adapter instead of a baery when using adapter.
• If power failure suddenly during measurement (for example, adapter plug is
disconnected to power outlet), adapter single-pin plug should be unplugged
and reinsert into the unit again.
• Any problems about adapter, please consult purchased dealer locally.
5.3 Connect to Cuff
After removing the cuff, connect the trachea of the cuff to the tracheal connection
hole on the left side of the unit (the hole marked with the cuff mark). The air pipe
should be properly connected when connecting to prevent the air path from being
bent or blocked.
5.4 User switch
The default is user 1. In OFF mode, long press the [START/STOP], the user 1 icon is
flashing. Press [MEM] to switch to user 2, then press [START/STOP] again to save.

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5.5 Setting time, date and kPa/mmHg unit selection
The unit automatically records the date and time of each measurement, which
is very important.Because the blood pressure of the human body is constantly
changing on the same day, it is recommended that you set the correct date and
time immediately after installing the battery.Please set the correct date and time
as following,(Example: enter time and day -12:01 pm. on Aug. 28th )
1. In power off mode, press and hold the [START/STOP] key and the [MEM] key
for about 3 seconds at the same time, and the product will enter the function
setting mode (if not selected, the system defaults to the factory year). The
last two digits of the year will flash on the screen. You can enter the year by
pressing the [MEM] button. For example, the default year is 20: press once to
increase the year from 20 to 21.
2. Press the [START/STOP] button again, and there will be a jump of the month
in the left corner of the screen. At this time, the first digit of the month starts
to flash. You can enter the month by pressing the [MEM] button (for example,
you can increase the month from January to 8 months by pressing 7 times).
3. Press the [START/STOP] button again, the screen will switch to the date setting,

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at this time, the last two digits of the date will start to flash. You can enter the
date by pressing the [MEM] button (for example, you can change the date
from 1st to 28th by pressing the button 27 times)
4. Press the [START/STOP] button again, the screen will switch to the time
setting. At this time, the first digit (indicating hour) starts to flash. Please input
the time by pressing the [MEM] button (for example, you can change the time
from 0:00 to 12:00 by pressing the [MEM] button 12 times).
5. Press the [START/STOP] button again, and the last two digits (in minutes) will
start to flash. You can enter the minute by pressing the [MEM] button (for
example, pressing the button 1 times will increase the time from 0 minutes to
1 minutes).
6. Press the [START/STOP] button again to enter the kPa/mmHg unit selection.
You can select kPa or mmHg by pressing the [MEM] button, “0.0” will display
on the screen when kPa is selected, and “0”will display when mmHg is
selected.

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7. In the last step, press the [START/STOP] button, and the date will be displayed
after setting (the date will be displayed first, and will automatically jump to the
time after 3 seconds). Press the [START/STOP] key again to close the setting.
If there is no operation, the machine will automatically shut down after 30
seconds.
6. Measurement of blood pressure
6.1 Preparaon before measurement

Avoid eating, smoking or any form of
activity before measuring, all of which
will affect the measurement. Try to
relax in a quiet environment, rest for 10
minutes, and then take measurements.

If you have heavy clothing, please
detach from the upper arm.

Select the arm for blood pressure
measurement (usually the left arm) and
take blood pressure measurements on
the same arm and in the same area.

Regularly take blood pressure
measurements at the same time every
day, because blood pressure will change

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differently over time.
6.2 Common factors that lead to erroneous measurements .
Note: Comparative blood pressure measurements should be performed in the
same condition (usually referred to quiet conditions)!

If the arm artery is low (high) relative to the heart , it will result in a high (low)
blood pressure value. (Each 15cm height difference will produce 10 mmHg/1.3
kPa error value)!

This unit is not suitable for newborns.

Note: Please use the original arm cuff that meets the clinical test requirement!

The loose or air bag exposed cuff will lead to false blood pressure.

The arm will compress the blood vessels due to repeated measurements.
This condition will also cause a biased blood pressure value. Therefore, when
making repeated measurements, be sure to rest for 3-5 minutes or raise your
arm for 3 minutes to reduce the congestion.

Do not pressure the cu when measuring, otherwise the measurement will be
inaccurate or out of funcon.
6.3 The correct method of using the cuff:
a. Make sure the arm strap connector is fully inserted into the sphygmomanometer
vent.
b. Please take off your coat, sweater and other thicker clothes, do not have any
accessories, bare upper arm or wear a thin shirt for measurement.
c. Wrap the cuff around the left arm.
d. Do not wrap the cuff too tightly (It is the best to easily insert a finger) and the
lower edge of the cuff should be 2~3 cm
from the hand bend (as shown).
e. After wrapping the cuff around the upper
arm, place the air tube on the inside of the
arm and on the same line as the middle
finger (as shown).
f. When measuring, please sit in the chair, place
your feet flat on the floor, place your arms
on the table, and put the arms and the heart
on the same level to relax and measure in a
relaxed and natural posture.
2
~
3
cm
2~3cm

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Suggestion:
If the arm strap cannot be worn on the left arm, the arm sleeve is worn on the
right arm and it is recommended to use the same arm measurement later.
6.4 Measurement step
After the arm band is set, the blood pressure measurement can be performed as
follows:
1) Tap the [START/STOP] button, the screen will be cleared after 1 second, then
the arm band will begin to inflate. The LED display shows the change of the air
pressure in the arm band.As following:
2) When the sphygmomanometer detects heartbeat, a flashing " " symbol will
appear on the LED display.
3) When the sphygmomanometer completes the measurement display will show
SYS, DIA and pulse frequency.
4) If you forget to turn off the power, the unit will automatically turn off the power
in 30 second.
Note: This product is available in millimeters of mercury or kPa depending on the
region. Use the product according to the user manual base on the selected display
mode.
6.5 Arrhythmia prompt and WHO blood pressure definition
function
1) Arrhythmia prompt function:
The unit can detect the arrhythmia. When this symbol appears after the
measurement is completed, it may differ from your normal blood pressure.
Please measure it a few more times. If this symbol is displayed frequently, it is
recommended that you tell the doctor about this situation, and ask the doctor for
frequent information on the irregular heartbeat indicator.

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2) WHO blood pressure definition function
This machine is equipped with hypertension warning
and warning bar reminding function. We can get blood
pressure from the World Health Organization
The height of the index, which can be read out that the
blood pressure is distributed in hypotension, ideal blood
pressure, normal blood pressure (green), normal
High blood pressure (Orange), mild hypertension,
moderate hypertension, severe hypertension (red), after measurement
After completion, the three color lights show corresponding positions according to
the high and low blood pressure. Specific blood pressure and red, yellow and green
indicators
Please refer to the table below for the corresponding relationship of lamps.
The correspondence between color and blood pressure values is shown in the
following table:
Scope Systolic (SYS) Diastolic (DIA) Indicator Color
Hypotension <100 <60 NONE
Desirable 100~120 60~80 Green*1
Normal 120~130 80~85 Green*2
Pre hypertension 130~139 85~89 Orange
Stage 1 Hypertension 140~159 90~99 Red*1
Stage 2 Hypertension 160~179 100~109 Red*2
Hypertensive Crisis ≥180 ≥110 Red*3
The meaning of the indicator color:

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Green, it represents normal blood pressure.
Red,please consult physician.
6.6 Memory
This sphygmomanometer automacally stores the last measurement of 60 groups
of two users.
In power o state, press the [MEM] buon displays the average value of the last
three measurements for the current user. Press [MEM] again to read the previously
measured value (MEM1-60). First display the 1 second memory group and test
date, then display the 1 second memory group and test me, and nally display
the test data.
6.7 Stop measurement
If there is any discomfort or for some reason, such as when the airbag is in a
persistent over-inated state, there may be a risk. At this me, the blood pressure
measurement must be stopped. You can press the [START/STOP] buon and the
sphygmomanometer will immediately release the air pressure in the cu to suit
your need.
6.8 Memory-erases all memory
Please note:

Before you delete the memory, please confirm carefully stored data will not be
used in the future.The best way is to keep good records so that you can provide
your doctor with the necessary information.

In the memory query mode, press and hold the [Mem] and [START/STOP]
buttons until the display position of SYS and DIA and the heart rate display
horizontal bar, and then the memory will be deleted.

The machine can't get rid of individual numeric values.
7. Error warning/Troubleshooting
7.1 False Alarm
The LED will display an error warning If any of the following occurs,as shown in

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figure marked:
Error code
aer leaving
the factory
Description Reason of error Solutions
Er01
Error of
measurement
Too much noise to
detect an effective
pulse signal
Please rest for 2
minutes, adjust the
cuff, keep quiet during
measurement, do not
move or talk.
No pulse was detected
Test results deviate
from normal range
Static pressure
exceeds the set
protection point
Pressure exceeds
design ceiling
protection
Measure blood
pressure again
Zero overtime
1. During the process of
returning to zero, the
air pressure in the cu
connues to uctuate;
2. The sensor part of
the circuit is abnormal;
3. Sensor damage.
1. Keep the cu intact
when returning to
zero;
2. Detecng the power
supply of the sensor;
3. Replace the sensor.

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Er02
Abnormal cuff
wearing
1. The cu is not worn;
2. Wearing too loose;
3. Pressure abnormal-
ity happens to the cu
during measurement.
Adjust the cuff. It is
advisable to insert
two fingers just after
the tightness is tied.
The cuff mouth of the
cuff is kept 2cm on the
elbow socket.
Lo Power is not
enough
The power is lower
than the minimum
operating voltage.
Replace the battery
Other Information
Even a healthy individual, the blood pressure is constantly changing (presenting
a jagged line), so when you make comparative measurements, you must be in a
fixed state (quiet environment)! If the difference is greater than 2.0 kPa / 15 mmHg
if the above conditions are met, or in some cases, in case of irregular hearbeat,
please consult your doctor.
7.2 Troubleshooting
If any faults (or abnormal conditions) occur during use, you can check and exclude
according to the items listed in the following table:

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Malfunction Exclude
When the battery is installed and
the switch is turned on, the LED
shows nothing.
1.Check whether the positive and negative
poles of the battery are placed correctly.
2.If the fault persists, please reposition or
replace the battery.
The air pump has begun to inflate,
but there is no rise in arm pressure.
*Check the hose connection for air leakage
or whether it is fully inserted into the
socket.
Sphygmomanometers fail to
measure blood pressure frequently,
or the blood pressure is abnormally
high or low.
1. Re-set the correct cuff.
2. If the left upper arm of the belt is covered
with sleeves or other clothing, please take
off. Re-measure blood pressure.
Each measurement was different,
although the sphygmomanometer
was functional or showed normal
blood pressure.
*Please study the following points: "further
consultation" or "6.2 common factors
leading to wrong measurement".
Remeasure!
self-measured value is different
from the measured value of the
doctor.
*Record daily measurements and consult
your doctor.
After the sphygmomanometer is
pressurized, the air pressure of the
cuff is released.
And the rate is slow even not
released at all.
*The air hole connection of the hose in the
arm belt has the phenomenon of "plastic
ring" falling off. Please put the plastic ring
on and measure again.
Any technical problems related to blood pressure monitor, should consult experts
or medical personnel, do not disassemble repair without permission!Unauthorized
disassembly, will lose the warranty right!