Dr. Trust Wrist Digital Blood Pressure Monitor User manual

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Wrist Digital Blood Pressure Monitor
Instruction Manual
Wrist cuff is suitable for wrist circumference of 13.5to 21 cm

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Table of contents
1. Introduction
1.1. Features of theWrist Digital BP Monitor
1.2. Important information about self-measurement
2. Important information on the subject of blood-pressure and its measurement
2.1. How does high/low blood-pressure arise?
2.2. Which values are normal?
3. The various components of the blood-pressure monitor
4. Putting the blood-pressure monitor into operation
4.1. Inserting the batteries
4.2. Reading the set date
4.3. Language selection, Setting the time and date and user selection
5. Carrying out a measurement
5.1. Before the measurement
5.2. Common sources of error
5.3. Fitting the cuff
5.4. Measuring procedure
5.5. Discontinuing a measurement
5.6. Memory –storage and recall of the measurements
5.7. Novel features: Positioning Detection / movement detection in the measuring
5.8. Usage/Instruction in Positioning Detection function
5.9. Memory –cancellation of all measurements
6. Error messages / malfunctions
7. Care and maintenance, recalibration
8. Guarantee
9. Safety , Care and Disposal
10. Reference to standards
11. Technical specifications

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1. Introduction
1.1. Features of the Wrist Digital BP Monitor
The blood-pressure monitor Wrist Digital BP Monitor (with integrated time/date display) is a fully automatic,
digital blood-pressure measuring device for use on the wrist, which enables very fast and reliable
measurement of the systolic and diastolic blood-pressure as well as the pulse frequency by way of the
oscillometric method of measuring. The device offers a very high and clinical tested measurement accuracy
and has been designed to provide a maximum of user-friendliness. The device is intended for self-use in
home .
Before using, please read through this instruction manual carefully and then keep it in a safe place. For further
questions on the subject of blood-pressure and its measurement, please contact your doctor.
Attention!
1.2. Important information about self-measurement
•Substitution of a different component might result in measurement error.
•Do not use with neonatal patients.
•Do not intend to use with pregnant or pre-eclamptic patients
•Too frequent measurements can cause injury to the patient due to blood flow interference.
•The application of the cuff over a wound can cause further injury.
•The application of the cuff and its pressurization on any limb where intravascular access or therapy, or an
arteriovenous (A-V) shunt, is present because of temporary interference to blood flow and could result in
injury to the patient.
•Do not let the cuff and its pressurization on the arm on the side of a mastectomy
•Pressurization of the cuff can temporarily cause loss of function of simultaneously used monitoring ME
equipment on the same limb.
•The need to check that operation of the automated sphygmomanometer does not result in prolonged
impairment of patient blood circulation.
•Not intended to be used together with HF surgical equipment.
• Do not forget: self-measurement means control, not diagnosis or treatment. Unusual values must always be
discussed with your doctor. Under no circumstances should you alter the dosages of any drugs prescribed by
your doctor.
• The pulse display is not suitable for checking the frequency of heart pacemakers!
• In cases of cardiac irregularity (Arrhythmia), measurements made with this instrument should only be
evaluated after consultation with the doctor.
Electromagnetic interference
The device contains sensitive electronic components (Microcomputer). Therefore, avoid strong electrical or
electromagnetic fields in the direct vicinity of the device (e.g. mobile telephones, microwave cookers). These
can lead to temporary impairment of the measuring accuracy.

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2. Important information on the subject of blood-pressure and its measurement
2.1. How does high/low blood-pressure arise?
The level of blood-pressure is determined in a part of the brain, the so-called circulatory centre, and adapted
to the respective situation by way of feedback via the nervous system. To adjust the blood-pressure, the
strength and frequency of the heart (Pulse), as well as the width of circulatory blood vessels is altered. The
latter is effected by way of fine muscles in the blood-vessel walls.
The level of arterial blood-pressure changes periodicallyduring the heart activity: During the «blood ejection»
(Systole) the value is maximal (systolic blood-pressure value), at the end of the heart’s «rest period»(Diastole)
minimal (diastolic blood-pressure value).
The blood-pressure values must lie within certain normal ranges in order to prevent particular diseases.
2.2. Which values are normal?
Blood pressure is too high if at rest, the diastolic pressure is above 90 mmHg and/or the systolic
blood-pressure is over 160 mmHg. In this case, please consult your doctor immediately. Long-term values at
this level endanger your health due to the associated advancing damage to the blood vessels in your body.
Should the systolic blood-pressure values lie between 140 mmHg and 160 mmHg and/or the diastolic blood-pressure
values lie between 90 mmHg and 100 mmHg, likewise, please consult your doctor. Furthermore, regular self-checks
will be necessary.
With blood-pressure values that are too low, i.e. systolic values under 100 mmHg and/or diastolic values
under 60 mmHg, likewise, please consult your doctor.
Even with normal blood-pressure values, a regular self-check with your blood-pressure monitor is
recommended. In this way you can detect possible changes in your values early and react appropriately. If you
are undergoing medical treatment to control your blood pressure, please keep a record of the level of your
blood pressure by carrying out regular self-measurements at specific times of the day. Show these values to
your doctor.
Never use the results of your measurements to alter independently the drug doses prescribed by your
doctor.

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Table for classifying blood-pressure values (unit: mmHg) according to World Health Organization:
Range
Systolic
Diastolic
Measures
Blood-pressure
Blood-pressure
Hypotension
lower than 100
lower than 60
Consult your doctor
Blood pressure optimum
between 100 and 120
between 60 and 80
Self-check
Blood pressure normal
between 120 and 130
between 80 and 85
Self-check
Blood pressure slightly high
between 130 and 140
between 85and 90
Consult your doctor
Blood pressure too high
between 140 and 160
Between90and 100
Seek medical advice
Blood pressure far too high
between 160 and 180
Between100and 110
Seek medical advice
Blood pressure dangerously
high
Higher than 180
Higher than 110
Urgently seek medical
advice!
Further information
• If your values are mostly standard under resting conditions but exceptionally high under conditions of
physical or psychological stress, it is possible that you are suffering from so-called «labile hypertension».
Please consult your doctor if you suspect that this might be the case.
• Correctly measured diastolic blood-pressure values above 120mmHg require immediate medical treatment.

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3. The various components of the blood-pressure monitor

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4. Putting the blood-pressure monitor into operation
4.1. Inserting the batteries
a) Insert the batteries (2 x size AAA 1.5V), therebyobserving the indicated polarity.
b) If the battery warning appears in the display, the batteries are empty and must be replaced by new
ones.
Attention!• After the battery warning appears, the device is blocked until the batteries have been
replaced.
• Please use «AAA» Long-Life or Alkaline 1.5V Batteries. The use of 1.2V Accumulators is not
recommended.
• If the blood-pressure monitor is left unused for long periods, please remove the batteries from the device.
4.2. Reading the set date
Please press the TIME button, the date will be shown in the display.
4.3. Language Selection, User selection and setting the time, date
Talking Language selection: Bilingual of English and Hindi
There are two languages: English and Hindi.
Press the time button for around 3 seconds, uses icon will
shining. Then you just need to press time button several times
until entering the language selection mode (during this process
you will see the year icon, month icon, time icon and switchable
of mmHg and kPa icon shining, just ignore them and press time button.). Default language is English. Press
memory button to switch language to Hindi and to mute (voice off). Again press “ON/OFF” button to save
your selection and exit.
User selection:
This advanced blood pressure monitor allows you to track blood pressure readings for 2 individuals
independently.
a) Before measurement, make sure you set the unit for
the intended user. The unit can track results for 2 individuals. (User 1, User 2)
b) Press the TIME button for at least 3 seconds.
The display now indicates the set user, during
which the set user blink. To confirm , press ON/OFF button .

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c) Click the MEMORY button to select User
d) We suggest the first person to take their pressure to be User 1.
Setting the time ,date
This blood-pressure monitor incorporates an integrated clock with date display. This has the advantage, that at
each measurement procedure, not only the blood-pressure values are stored, but also the exact moment of the
measurement.
After new batteries have been inserted, the clock begins to run from the following setting: 2010-06-20 09:30
O’clock.
You must then re-enter the date and current time. For this, please proceed as follows
1) Press the TIME button for at least 3 seconds firstly , user icon blink .
Then press TIME button again the display now indicates the set year, during
which the four characters blink.
2) The correct year can be entered by pressing the MEMORY button
3) Press the TIME button again. The display now
switches to the current date, during which the first
character (month) blinks.
4) The corresponding month can now be entered by
pressing the MEMORY button.
5) Press the TIME button again. The last two
characters (day) are now blinking
6) The corresponding day can now be entered by
pressing the MEMORY button.
7) Press the TIME button again. The display now
switches to the current time, during which the first
character (Hour) blinks

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8) The corresponding hour can now be entered by
pressing the MEMORY button.
9) Press the TIME button again. The last two characters
(Minutes) now blink.
10) The exact time can now be entered by pressing the
MEMORY button
11) How to select pressure unit , switchable of mmHg and kPa ,
Finished the whole setting process mentioned above , Press the TIME button again ,
Display “mmHg”blink ,
To press “ MEMORY” button can switch “ pressure unit as “mmHg”or “kPa”,
To press the TIME button selects pressure unit .
12) Now after all settings have been made, press the
TIME button once again. The date is briefly displayed
and then the time. The input is now confirmed and the
clock begins to run.
☞Further Information
With each press of the button (TIME, MEMORY) one input is made (e.g. switching over from hours
to minutes mode, or altering the value by +1).
However, if you keep the respective button depressed, you can switch more quickly to find the desired value
respectively.
5. Carrying out a measurement
5.1. Before the measurement:
• Avoid eating, smoking as well as all forms of exertion directly before the measurement. All these factors

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influence the measurement result. Try and find time to relax by sitting in an armchair in a quite atmosphere
for about ten minutes before the measurement.
• Measure always on the same wrist (normally left).
• Attempt to carry out the measurements regularly at the same time of day, since the blood-pressure changes
during the course of the day.
5.2. Common sources of error:
Comparable blood-pressure measurements always require the same conditions! These are normally
always quiet conditions.
• All efforts by the patient to support the arm can increase the blood-pressure. Make sure you are in a
comfortable, relaxed position and do not activate any of the muscles in the measurement. Use a cushion for
support if necessary.
•The performance of the automated sphygmomanometer can be affected by extremes of temperature, humidity
and altitude.
• If the wrist artery lies considerably lower (higher) than the heart, an erroneously higher (lower)
blood-pressure will be measured! (Each 15cm difference in height results in a measurement error of
10mmHg!)
• A loose cuff causes false measurement values.
• With repeated measurements, blood accumulates in the respective wrist which can lead to false results.
Correctly executed blood-pressure measurements should therefore first be repeated after a 5 minute pause or
after the armhas been held up in order to allow the accumulated blood to flow away (after at least 3 minutes).
5.3. Fitting the cuff
a) Remove all eventual objects and jewellery (e.g. wristwatch) from the wrist in question. Draw the cuff over
the wrist.
b) The distance between the cuff and the hand should be approx. 10 mm.
c) Secure the cuff with the Velcro fastener, so that it lies
comfortably and not too tight, whereby no space should
remain between the cuff and the wrist.
d) Lay the arm on a table, with the palm upwards. Support the arm a little with a rest (cushion), so that the
cuff rests at about the same height as the heart. Take care, that the
cuff lies free. Remain so for 2 minutes sitting quietly,
before beginning with the measurement.
e) Let legs uncrossed, feet flat on the floor, back and arm supported.

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5.4. Measuring procedure
After the cuff has been appropriately positioned, the measurement can begin:
a) Press the ON/OFF button, the pump begins to inflate the cuff.
In the display, the increasing cuff-pressure is continually displayed.
b) After reaching the inflation pressure, the pump stops and
the pressure slowly falls away. The cuff-pressure (large
characters) is displayed during the measurement. When the
device has detected the pulse, the heart symbol in the display
begins to blink for every pulse beat.
c) When the measurement has been concluded,
The measured systolic and diastolic blood-
pressure values as well as the pulse frequency are now displayed.
Example (Fig.): Systole 118, Diastole 73, Pulse 75
The measurement results are displayed, until you switch the device off. If no button is pressed for 3 minutes,
the device switches automatically off, to save the batteries.
5.5. Discontinuing a measurement
If it is necessary to interrupt a blood pressure measurement
for any reason (e.g. the patient feels unwell), the “ON/OFF ”button
can be pressed at any time. The device then immediately
lowers the cuff-pressure automatically.
5.6. Memory –storage and recall of the measurements
The blood-pressure monitor automatically stores each of the last 120 measurement values.
By pressing the MEMORY button, an average value of the last
3 measurements as well as the last measurement (MR1) and the
further last 120 measurements (MR2, MR3, ..., MR120) can be displayed
one after the other.
(MR1: Values of the last measurement) (MR2-MR120: Values of the measurement before MR1)

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5.7.Novel features : Positioning Detection / movement detection in the measuring
How to select Positioning detection mode :
To press and hold I/O button “ ” 3 seconds , then
enter to Positioning selection mode
Mode On2 is a default positioning detection mode .
And to press “ ” to change a desired mode ,
To press I/O key “ ” for the desired mode
confirmation .
5.8.Usage/Instruction in Positioning Detection function
If the device is positioned properlyand positioning indicator is Blue
If the device is not positioned properly and positioning indicator is Orange
There are 3 modes in Positioning detection , On1 , On2 and OFF .
On1 mode : Positioning indicator detects whether or not the device is in the proper position . in “ON1
mode” , even if the device is not positioned properly and the Positioning indicator is orange, the device is still
workable .
an Orange Positioning indicator provides just a reminding of an improper wrist position or movement
detected during measuring
On2 mode : the device is not positioned properly and the Positioning indicator is orange, the device is not
allowed to take measurement . or movement is detected during measuring , the positioning indicator is
changed from Blue to Orange . the device will be shut down immediately . you should press I/O button to
restart the measurement .
A default mode is On2 Mode
OFF mode: user can disable the positioning detection function .

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5.9. Memory–cancellation of all measurements Attention!
Before you delete all readings stored in the memory, make sure you will not need refer to the readings at a
later date. Keeping a written record is prudent and may provide additional information for your doctor’s visit.
In order to delete all stored readings, depressthe MEMORY
button for at least 5 seconds, the display will show the symbol
«CL»and then release the button . to permanently clear the memory,
Press the MEMORY button while «CL»is flashing .
6. Error messages/malfunctions
If an error occurs during a measurement, the measurement is
discontinued and a corresponding error code is displayed
(Example: Error No. 2).
Error No.
Possible cause(s)
ERR 1
No pulse has been detected.
ERR 2
Unnatural pressure impulses influence the measurement result. Reason: hand was
moved during the Measurement (Artefact).
ERR 3
1) The inflation takes too long. The cuff is not correctly seated.
2) Positioning Detection error
ERR 5
The measured readings indicated an unacceptable difference between systolic and
diastolic pressures. Take another reading following directions carefully. Contact you
doctor if you continue to get unusual readings.
ERR8
Pressure in cuff is over 290mmHg
Other possible malfunctions and their elimination
If problems occur when using the device, the following points should be checked and if necessary, the
corresponding measures are to be taken:
Malfunction
Remedy
The display remains empty when the
instrument is switched on although the
batteries are in place.
1.Check batteries for correct polarity and if necessary
insert correctly.
2.If the display is unusual, re-insert batteries or exchange
them.
The device frequently fails to measure the
blood pressure values, or the values
measured are too low (too high).
1. Check the positioning of the cuff.
2. Measure the blood-pressure again in peace and quiet
under observance of the details made under point 5.
Every measurement produces a different
value although the instrument functions
1. Please read the following information and the points
listed under «Common sources of error». Repeat the

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normally and the values displayed are
normal
measurement.
Please note: Blood pressure fluctuates continually so
successive measurements will show some variability.
Blood pressure measured differs from
those values measured by the doctor.
1. Record the daily development of the values and
consult your doctor.
Please note:
Individuals visiting their doctor frequently
experience anxiety which can result in a
higher reading at the doctor than obtained at
home under resting conditions.
☞Further Information
The level of blood-pressure is subject to fluctuations even with healthy people. Important thereby is, that
comparable measurements always require the same conditions (Quiet conditions)!
If, in spite of observing all these factors, the fluctuations are larger than 15mmHg, and/or the arrhythmia
symbol is in the display, please consult your doctor.
For licensing, the device has been subjected to strict clinical tests, by which the computer program used to
measure the blood-pressure values was tested by experienced specialist doctors in Germany. The same
computer program is used in every individual device, and has thus also been clinically tested.
The manufacture of the devices takes place according to the terms of the European standard for
blood-pressure measuring devices. You must consult your specialist dealer if there are technical problems
with the blood-pressure instrument. Never attempt to repair the instrument yourself!
Any unauthorised opening of the instrument invalidates all guarantee claims!
7. Care and maintenance, recalibration
a) Do not expose the device to either extreme temperatures,
humidity, dust or direct sunlight.
b) The cuff contains a sensitive air-tight bubble.
Handle this carefully and avoid all types of
straining through twisting or buckling.
c) Clean the device with a soft, dry cloth. Do not
use petrol, thinners or similar solvent.
Spots on the cuff can be removed carefully with a
damp cloth and soapsuds. The cuff must not be
washed!

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d) Do not drop the instrument or treat it roughly in any way. Avoid strong vibrations.
e) Never open the device! Otherwise the manufacturer calibration becomes invalid!
8. Service life
5 years
9. Battery life :
300 times measurement with 2- size “AAA” alkaline Batteries
10. Safety , Care and Disposal ______
Safety and protection
This instrument may be used only for the purpose described in this booklet. The manufacturer
cannot be held liable for the damage caused by incorrect application.
This instrument comprise sensitive components and must be treated with caution. Observe the
storage and operating condition described in the “Technical specifications”section !
Protect it from
-water and moisture
-extreme temperatures
-impact and dropping
-contamination and dust
-direct sunlight
-heat and cold
The cuffs are sensitive and must be handled with care
Only pump up the cuff once fitted
Do not use the instrument close to strong electromagnetic fields such as mobile telephones or radio
installations
Do not use the instrument if you think it is damaged or notice anything unusual.
If the instrument is not going to be used for a prolonged period the batteries should be removed.
Read the additional safety instructions in the individual sections of this booklet.
Ensure that children do not use the instrument unsupervised: some parts are small enough to be
swallowed
Must use the recognized accessories, detachable parts and materials,
if the use of other parts or materials can degrade minimum safety

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A warning to remove primary batteries if the instruments is not likely
to be used for some time
Instrument care
Clean the instrument only with a soft, dry cloth
Disposal
batteries and electronic instruments must be disposed of in accordance with the locally
applicable regulations, not with domestics waste
11. Reference to standards
Device standard: Device corresponds to the requirements of
the European standard for non-invasive
blood- pressure monitor
EN1060-1
EN1060-3
EN1060-4 –clinical investigation
IEC/EN 60601-1-11
ANSI / AAMI SP10, NIBP ,
IEC80601-2-30:2009 + corrigendum 2010
Electrical compatibility: Device fulfils the stipulations of the
IEC/EN 60601-1 ,
EN 60601-1-2
The stipulations of the EU-Guidelines 93/42/EEC for Medical Products Class IIa have been fulfilled.
12. Technical specifications
Measurement Procedure: Oscillometric , corresponding to Korotkoff method:
Phase I: systolic, Phase V: diastolic
Display: Digital display
Measuring range: Pressure：30 to 280 mmHg (in 1 mmHg increment)
Pulse: 40 to 199 beat/minute
Static accuracy: Pressure：±3mmHg
Pulse: ±5% of reading
Measuring resolution : 1mmHg
Inflation: Automatic inflation by internal pump
Memory function: 120 memory ×2 users (SYS, DIA, Pulse)
Decompression: Constant exhaust valve system
Power source: 2- size “AAA”alkaline Batteries
Rated voltage: DC 3V 1.5W (direct current)

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Operation temperature: 5~40℃/41~104℉
Operation humidity: 15%~85%RH maximum
Storage temperature: -10~55℃/14~131℉
cuff size：13.5- 21cm
Storage humidity: 10%~95%RH maximum
Dimensions : 74 x84 x30 ±1.0 mm
Device weight : 182g±5 g (including batteries and cuff)
Batteries weight：23g±1.0g
storage box weight：57g±1.0g
size of the Sys / Dia digits : 12mm
time display：24h display
visible display size：43.8x34 mm
Cuff pressure display range: 0~290mmHg/0~38.7kPa
Electrical shock protection: Internal power unit
Safety classifications: Type BF equipment
Mode of operation: Continuous operation
Protection against ingress of water: IP22
Accessories: storage case , 2 “AAA”batteries, instruction manual ,warranty card
13. Manufacturer's Declaration
The Wrist Digital BP Monitor is intended for use in the electromagnetic environment specified below. The
customer or the user of the Wrist Digital BP Monitor should assure that it is used in such an
environment.Electromagnetic Emissions: (IEC60601-1-2)
Emission Test
Compliance
Electromagnetic Environment
RF emission CISPR 11
Group 1
The Wrist Digital BP Monitor uses RF energy only
for internal functions. Therefore, this RF emission is
extremely weak and there is little chance of it
creating any kind of interference whatsoever with
nearby electronic equipment.
RF emissions CISPR 11
Class B
The Wrist Digital BP Monitor 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
IEC 61000-3-3
Not applicable
Electromagnetic Immunity: (IEC60601-1-2)
Immunity
test
IEC60601-1-2 test level
Compliance level
Electromagnetic environment
-guidance

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Electrostatic
discharge
(ESD) IEC
61000-4-2
±6 kV contact
±8 kV air
±6 kV contact
±8 kV air
Floors should be wood, concrete
or ceramic tile. If floors are
covered with synthetic material,
the relative humidity should be at
least 30 %.
Electric fast
transient/
burst IEC
61000-4-4
±2 kV for power supply
lines
±1 kV for input/output
lines
Not applicable
Mains power quality should be
that of a typical commercial or
hospital environment.
Surge IEC
61000-4-5
±1 kV differential mode
±2 kV common mode
Not applicable
Mains power quality should be
that of a typical commercial or
hospital environment.
Voltage
dips, short
interruptions
and voltage
variations on
power
supply input
lines IEC
61000-4-11
<5 % UT（95% dip in
UT.）for 0.5 cycle
40 % UT（60% dip in
UT）for 5 cycles
70 % UT(30% dip in
UT) for 25 cycles
<5 % UT（95% dip in
UT）for 5 sec.
Not applicable
Mains power quality should be
that of a typical commercial or
hospital environment. If the user
of the upper arm stlye requires
continued operation during power
mains interruptions, it is
recommended that the Wrist
Digital BP Monitor be powered
from an uninterruptible power
supply or a battery.
Power
frequency
(50/ 60 Hz)
magnetic
field IEC
61000-4-8
3 A/m
Not applicable
Not applicable
Note: UTis the a.c. mains voltage prior to application of the test level.
Immunity
test
IEC60601-1-2
test level
IEC60601-1-2
test level
Electromagnetic environment - guidance
Conducted
RF IEC
61000-4-6
Radiated
RF IEC
3 Vrms 150
kHz to 80 MHz
80% AM (2Hz)
3 Vrms 80
MHz to 2.5
Not applicable
3 V/m
Portable and mobile RF communications
equipment should be used no closer to any
partof the Wrist Digital BP Monitor, including
cables, than therecommended separation
distance calculatedfrom the equation applicable
to the frequency of the transmitter.
Recommend separation distance

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61000-4-3
GHz 80% AM
(2Hz)
3V
d = 1.2×p1/2 80Mhz to 800 MHz
d = 2.3×p1/2 MHz to 2.5 GHz
where P is the maximum output power rating of
the transmitter in watts (W) according to he
transmitter manufacturer and d is the recom-
mended separation distance in meters (m).
Field strengths from fixed RF transmitters as
determined by an electromagnetic site surveya,
should be less than the compliance level in each
frequency rangeb. Interference may occur in the
vicinity of equipment marked with the following
symbol:
Note1: At 80 MHz and 800 MHz, the higher frequency range applies.
Note2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects, and people.
aField strengths from fixed transmitters, such as base stations for radio (cellular/cordless)telephones and
land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcastcannot be predicted
theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an
electromagnetic site survey should be considered. If the measuredfield strength in the location in which the
Wrist Digital BP Monitor is used exceeds the applicable RF compliance level above, the Wrist Digital BP
Monitor should be observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as reorienting or relocating the Wrist Digital BP Monitor.
b Over the frequency range 150 kHz to 80MHz, field strengths should be less than 3 V/m.
Recommended Separation Distances:
Recommended separation distance between portable and mobile RF communications equipment and the
Wrist Digital BP Monitor
The Wrist Digital BP Monitor is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the Wrist Digital BP Monitor can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the Wrist Digital BP Monitor 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
150 kHz to 80 MHz d
= 1.2×p1/2
80 MHz to 800
MHz
800 MHz to 2.5 GHz
d = 2.3×p1/2

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d = 1.2×p1/2
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
23
For transmitters rated at a maximum output power not listed above, the recommended separation distance d
in metres (m) can be determined 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.
Note1:At 80MHz and 800MHz, the separation distance for the higher frequency range applies
Note2:These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.