CITIZEN CH-456 Digital Blood Pressure Monitor Instruction Manual

June 14, 2024
Citizen

INSTRUCTION MANUAL
FOR
DIGITAL BLOOD PRESSURE MONITOR
CH-456

CH-456 Digital Blood Pressure Monitor

CITIZEN CH 456 Digital Blood Pressure Monitor

  • Please read all of the information in the instruction manual before operating the monitor.

■ Ensure that you have all the following components.

  • Blood pressure monitor unit

  • Instruction Manual

  • 4 AA-size batteries (for monitor)

  • Cuff (model: SCN-003)
    [OPTION]

  • Large Cuff (model: SCL-005)

  • AC adapter (model: AC-230CZ)

GENERAL REMARKS

General remarks on blood pressure and blood pressure measurement

  1. To deflate the cuff quickly, press the “START/STOP” switch.

  2. Before applying your blood pressure cuff, be sure you have selected the appropriate size cuff:
    Cuff (model: SCN-003) fits arm circumference: 22-32cm
    [OPTION] Large Cuff (model: SCL-005) fits arm circumference: 32-42cm

  3. When attaching the cuff, adjust the position of the cuff so that the blue marker is located in the center of your arm and the hem of the cuff is 1-2 cm for Cuff / 2-3 cm for Large Cuff above your elbow.

  4. Self measurement is not therapy! In no event should you change the dosage of your medication prescribed by your physician.

  5. As preparation for measuring your blood pressure, you should urinate and then remain relatively still for 10 to 15 minutes prior to measurement.

  6. DO NOT place too much emphasis on the results of one measurement. Keep a continuing record of your blood pressure variations. A complete picture can only be obtained from a large number of readings.

To obtain correct blood pressure measurements

  1. Take five or six deep breaths and then relax before measuring your blood pressure.
    If you are tense when taking the measurement, you will not get a valid reading.

  2. Your blood pressure will be elevated if you are anxious or irritated, suffering from lack of sleep or constipation, or have just taken some exercise or eaten a meal.

  3. Wrap the cuff around your arm and tighten it so that one finger can be inserted between the cuff and arm. ( See page 10, 11)

  4. DONOT measure your blood pressure after bathing or drinking.

  5. Measure your blood pressure where the room temperature is around 20°C. DO NOT measure your blood pressure when it is too cold (below 10°C) or too hot (above 40°C) in the room.

  6. DONOT try to measure your blood pressure immediately after drinking coffee or tea or after smoking.

  7. Measure your blood pressure when you are relaxed and still. Keep the center of the cuff at the level of your heart and DO NOT move your arm or talk.

  8. DONOT measure blood pressure when the cuff has been on your arm for a few minutes or more. During this time, your arm will have built up a higher blood pressure and you will not get valid reading.

  9. If the Body Movement Indicator or Irregular Heartbeat (IHB) Indicator is displayed, relax and measure your blood pressure again. If the Irregular Heartbeat (IHB) Indicator appears frequently, you are advised to consult a doctor about your health condition. ( See page 12)

  10. The figure below shows the blood pressure classifications under the WHO standards.
    CITIZEN CH 456 Digital Blood Pressure Monitor - graph Remarks:
    The graph is not exact, but may be used as a guide in understanding non- invasive blood pressure measurements. The device is only intended for use by adults.
    Definitions and Classifications of Blood Pressure Levels

  • This unit is equipped an indicator which visually indicates the blood pressure classification (Optimal/Normal/High-Normal/Grade 1 Hypertension/Grade 2 Hypertension/Grade 3 Hypertension) of the result after each measurement. 11. Intended Use
    ● This device is noninvasive blood pressure monitor by oscillometric method.
    This device can measure the systolic blood pressure (SYS), the diastolic blood pressure (DIA) and the pulse rate automatically.
    ● This device is intended to be used for checking personal health condition at home under the direction of a physician and is not intended to be a diagnostic device.
    ● This device is not intended for use with neonates or infant, and not intended for automatic cycling measurement.

Measure your blood pressure at the same time each day.

  • Your blood pressure changes all the time. This means that data gathered over a long period has far more significance than data from just one measurement.
    For this reason, you must measure your blood pressure on a daily basis. Ideally, you should measure your blood pressure at the same time each day, wherever possible.

PRECAUTIONS FOR USE AND MAINTENANCE

Precautions for use

  1. If you suffer from heart disease, high blood pressure or other circulatory disease, consult your physician before using the monitor.

  2. Inflating to a higher pressure may result in bruising where the cuff is applied.
    If the cuff pressure feels abnormal or you experience any other irregularity while using the cuff, reduce the pressure immediately by pressing the “START/STOP” switch, detach the cuff or unplug the air hose connector from the monitor and then consult the sales outlet where you purchased the monitor.

  3. If you think the measurement is abnormal or if measurement makes you feel unwell, discontinue use and consult your physician.

  4. Blood pressure measurement may not be possible for anyone with a weak pulse or arrhythmia.

  5. Repeated blood pressure measurement and prolonged overinflation may cause problems such as congestion or swelling in some people.

  6. Frequently repeated blood pressure measurements will not give accurate results. Allow an interval of about 1 minute between measurements.

  7. If you suffer from a severe problem with blood circulation in your arms, consult your physician before using the monitor. Failure to do so could be hazardous to your health.

  8. Measurement may not be possible for anyone with insufficient blood flow to the area where measurements will be taken or who suffers from a frequent irregular heartbeat. Consult your physician for advice on whether to use the monitor.

  9. DONOT wrap the cuff around an injured arm.

  10. DO NOT wrap the cuff around an arm in which a drip (intravenous infusion) is inserted or which is being used for blood transfusion as part of medical treatment. Doing so could result in an injury or a serious accident.

  11. Do not share the cuff with other infective person to avoid cross-infection.

  12. If you have any doubt about the application of the cuff on the arm on the side of a mastectomy, consult your physician.

  13. DO NOT use the monitor in the vicinity of flammable gases such as those used for anaesthesia. Doing so could ignite the gases and cause an explosion.

  14. DO NOT use the monitor in enriched oxygen environments such as a hospital’s hyperbaric chamber or oxygen tent. Doing so could ignite the oxygen and cause a fire.

  15. DO NOT use mobile phones near the monitor as this could result in a malfunction.

  16. If you use a cardiac pacemaker, consult your physician before using the monitor.

  17. Be sure to use this unit only for measuring blood pressure. DO NOT use it for any other purpose.

  18. Be sure to use only our authorized parts and accessories. Parts and accessories not approved for use with the device may damage the unit.

  19. DO NOT use this unit on infants.

  20. Blood pressure measurement may not be possible for anyone with common arrhythmias such as atrial or ventricular premature beats or atrial fibrillation.

Maintenance Precautions

  1. DO NOT store the blood pressure monitor in locations exposed to direct sunlight, high temperatures (over 60°C), low temperatures (below -20°C), high relative humidity (over 95%) or excessive amounts of dust.
    Make sure to store the blood pressure monitor, where children, pets and or pests are not there.

  2. DONOT drop the blood pressure monitor or the cuff and subject it to other shocks or vibration.

  3. Remove the batteries if the monitor will be left unused for a long period.

  4. DONOT attempt to disassemble the monitor or the cuff.

  5. DONOT bend the cuff or the air nose excessively.

  6. If the monitor and the cuff are very dirty, wipe them clean with a cloth moistened with a neutral detergent. Then wipe them with a dry cloth.

  7. NEVER clean the blood pressure monitor with alcohol, thinners or benzene, as this could damage the monitor.

  8. To clean the cuff, wipe it with a moist cloth. Avoid hard rubbing, as this will cause air leakages. Take care also not to get water into the air hose.

Warning No modification of this device is allowed.

Symbols Explanation
: The CE marking is meant to provide information to market inspectors in the EU member countries.
: Tyoe BF applied part (The cuff is tyoe BF applied part.)
: Keep dry
: Warning
: Refer to instruction manual before use
****: Appliance compliance WEEE directive
: Manufacturer

Warning
The device has been tested and homologated in accordance with EN60601-1-2 for EMC. This does not guarantee in any way that the device will not be affected by electromagnetic interference. Avoid using the device in high electromagnetic environment.

Nature and frequency of maintenance:
This product is designed for use over an extended period of time; however, it is generally recommended that it be inspected every two years to ensure proper function and performance.

Protect the nature environment:
Please help to protect natural environment by respecting national and/or local recycling regulations when disposing of the battery and the product at the end of their useful live.

WEEE MARK
If you want to dispose this product, do not mix with general household waste. There is a separate collection systems for used electronics products in accordance with legislation under the WEEE Directive (Directive 2012/19/EU) and is effective only within European Union.

Information on Disposal in other Countries outside the European Union.
If you wish to discard used batteries, please contact your local authorities or dealer and ask for the correct method of disposal.
Note for the battery symbol.
The symbol might be used in combination with a chemical symbol. In this case it complies with the requirement set by the Directive for the chemical involved.

Reference European standard:
The blood pressure measuring device corresponds to regulation EN60601-1, EN1060- 1, EN1060-3, EN1060-4.

Calibration:
The blood pressure measuring device is generally recommended to have the monitor inspected every two years to ensure correct functioning and accuracy.
Please contact a distributor.

Name: CITIZEN SYSTEMS JAPAN CO., LTD.
Address: 6-1-12, Tanashi-cho, Nishi-Tokyo-shi, Tokyo 188-8511, Japan
Factory
Name: CITIZEN SYSTEMS (JIANGMEN) CoO., LTD.
Address: Building 6, No. 399 Jinxing Road, Jianghai District, Jiangmen, Guangdong, 529040, China.

European Representative:
Name: EMERGO EUROPE
Address: Prinsessegracht 20, 2514 AP The Hague, The Netherlands
● For technical data, please contact our European
Representative

Made in China

IDENTIFICATION OF PARTS

Component namesCITIZEN CH 456 Digital Blood Pressure Monitor -
Component names

*See page 6 for the display icons.
See page 7 for the Battery compartment
< Display>*CITIZEN CH 456 Digital Blood Pressure Monitor -
Display See page 12 for the Body Movement Indicator and Irregular Heartbeat (IHB) Indicator.

LOADING THE BATTERIES

(Batteries supplied with the unit should be loaded in compartment before you use the blood pressure monitor.)

  • When you install the batteries for the first time after purchase, the monitor will display the clock setting screen. Follow step 2 and subsequent steps in TIME ADJUSTMENT ( See page 9) to set the clock.

    1. Open the cover of battery compartment.
      Pressing the hook down, pull the cover toward you to open.CITIZEN CH 456
Digital Blood Pressure Monitor - Battery compartment* If the Blood pressure monitor is left unused for an extended period of time, the batteries should be removed from the compartment.

    2. Place batteries in the compartment.
      Put the batteries paying attention to the positive and negative terminal symbols and .

    3. Close the battery cover.
      Fitting the lugs of the cover at the mating recesses of the battery compartment body, push the hook to close the cover.CITIZEN CH 456 Digital
Blood Pressure Monitor - Battery cover

REMOVING THE BATTERIES

  • When the icon is displayed or nothing appears in the display, replace the old batteries with four new ones. All four batteries snould be changed at once.
    : The remaining capacity of the batteries is inadequate.

  • Adjust the clock after changing the batteries.

  • The data stored in the memory is not deleted by changing the batteries.

  • Do not use rechargeable batteries.

  • Do not use alkaline (LR6) and manganese (RGP) batteries together.

  • Batteries included are for demonstration purposes only. Battery life may be shorter than specified.

  • When disposing of used batteries, comply with governmental regulations or environmental public institution’s rules that apply in your country/area.

USING AC ADAPTER (OPTION)

Using the optional dedicated AC adapter (model: AC-230CZ) for the CITIZEN blood pressure monitor (CH-456) allows you to measure your blood pressure without having to worry about the amount of remaining charge in the batteries.
Warning
The CH-456 and AC-230CZ should be used indoors in dry ocation.

  1. Insert the AC adapter plug into the socket on the blood pressure monitor.CITIZEN CH 456 Digital Blood Pressure Monitor - Ac adapter* Make sure there is no obstruction within the immediate vicinity of the AC adapter so that it can be immediately unplugged from the mains power outlet.
  2. Plug the AC adapter into a mains power outlet.
    ● If you plan to use the AC adapter for an extended period of time, remove the batteries. If the batteries are left in the compartment, electrolyte may leak from the batteries and cause a fault in the blood pressure monitor.
    ● It is recommended that batteries are in the unit when using the AC adapter. If there are no batteries in the unit wnen the AC adapter is disconnected from either the power outlet or the unit itself, date and time settings will be lost. /
    ● Plug the AC adapter into the socket, where you can easily plug off soon and safely in times of trouble.
    ● When disconnecting the AC adapter, unplug the AC adapter from the main power outlet, and then unplug the AC adapter plug from the socket on the blood pressure monitor.

The dedicated AC adapter (model: AC-230CZ) for the CH-456 is optional.
The AC adapter is available from retailers stocking CITIZEN digital blood pressure monitors.

TIME ADJUSTMENT

Setting the clock enables measurements to be accurately recorded.
The monitor can record the date and time of measurement as well as the measurement results.
Be sure to set the clock after inserting the batteries. Set the date first and then the time.

  • When you install the batteries for the first time, the monitor will display the clock setting screen. You do not need to perform step 1. Proceed to step 2.
    If you set the clock and change its setting, start from step 1.

    1. Press and hold the Date/Time Set switch for approximately two seconds.
      The “year” indicator blinks.

    2. Press the Adjust switch to adjust the “year”.
      Press Adjust switch to increase the number by one. (The year can be adjusted in the range of 2015-2044.)
      Press Date/Time Set switch to confirm the setting.
      The “year” is set and the “month” indicator blinks.

  • You can fast-forward the numbers in display by pressing and holding Adjust switch.

    1. Press the Adjust switch to adjust the “month”.
      Press Adjust switch to increase the number by one.
      Press Date/Time Set switch to confirm the setting.
      The “month” is set and the “day” indicator blinks.

    2. Press the Adjust switch to adjust the “day”.
      Press Adjust switch to increase the number by one.
      Press Date/Time Set switch to confirm the setting.
      The “day” is set and the “hour” indicator blinks.

    3. Press the Adjust switch to adjust the “hour”.
      Press Adjust switch to increase the number by one.
      Press Date/Time Set switch to confirm the setting.
      The “hour” is set and the “minutes” indicator blinks.

    4. Press the Adjust switch to adjust the “minutes”.
      Press Adjust switch to increase the number by one.
      Press Date/Time Set switch with the time signal on the radio, etc. to confirm the setting.
      The “minutes” are set and “12” (12-hour format) blinks.

    5. Press the Adjust switch to adjust the “time format”.
      The setting switches between 12-hour format (12H) and 24- hour format (24H) each time Adjust switch is pressed.
      Press Date/Time Set switch to confirm the setting (12H or 24H).
      When clock adjustment is completed, the set date and time appear briefly and then the display turns off.

MEASURING YOUR BLOOD PRESSURE

  1. Plug the air hose connector into the main unit.
    ● Plug the air hose connector firmly into the air hose socket on the main unit, as illustrated.
    CITIZEN CH 456 Digital Blood Pressure Monitor - air hose
connector

  2. ATTACHING THE CUFF
    Before applying your blood pressure cuff, be sure you have selected the appropriate size cuff:
    Cuff (model: SCN-003) fits arm circumference: 22-32 cm
    [OPTION]
    Large cuff (model: SCL-005) fits arm circumference: 32-42 cm
    1. Unroll the cuff and thread the end through the metal hoop so that the side with the hook-and-loop fastener is on the outside. 2. Put the cuff around your arm so that the blue marker comes to the palm side.CITIZEN CH
456 Digital Blood Pressure Monitor - Blue marker 3. Adjust the position of the cuff so that the blue marker is located in the center of your arm and the hem of the cuff is 1-2 cm for Cuff / 2-3 cm for Large cuff above your elbow.
    CITIZEN CH 456 Digital Blood Pressure Monitor - Cuff* The cuff should be put on the bare arm or over a light-weight underwear.

  • If you wear a heavy-weight top, please remove it.
    4. Pull the end of the cuff outwards so that the cuff is snug around your arm and then secure the end to the hook- and-loop fastener. 5. Place your arm on a table or the like, so that the center of the cuff comes to the height of your heart. * Carefully place the cuff on your, arm, taking care to use the correct tightness. The tightness is correct if you can readily slide a finger between the cuff and your arm. 6. Relax your arm and lightly open your hand, with the palm upward.

    1. Place the cuff at the height of the heart.
    2. Press the “ START/STOP” switch.
      ● All digits displayed is an initial display, indicating that the monitor is functioning normal.
      ● The cuff is pressurized automatically.
  • If the unit Judges that pressurization is insufficient, it automatically repressurizes.CITIZEN CH 456 Digital Blood Pressure Monitor - Symbol 15* is displayed when a pulse is detected.

  • When you want to stop measurement, press the “ START/STOP” switch.
    The cuff is deflated and measurement stops.

  • If the previous user had a high pressure setting, that high pressure will automatically be used for the current measurement.

  • If the pressurization value exceeds 280 mmHg, if pressurization feels abnormal, or if you want to stop the measurement process, press the “  START/STOP” switch again. The cuff deflates, and the power turns off. 5. The measurement results are displayed.CITIZEN CH 456 Digital Blood Pressure Monitor - Measurement results ● Once measurement is complete, the cuff deflates and the measurement results (systolic/diastolic blood pressure values, pulse) are displayed.

  • Provided there is no error in the measurement results, they are stored automatically. 6. Finishing measurement.
    ● Press the “ START/STOP” switch to turn the monitor off.
    ● After taking the blood pressure measurement, pressing the “ START/STOP” switch will turn the monitor off. However, if you do not press the switch, the monitor’s Auto OFF function will automatically turn the monitor off after 3 minute.

[Manual pressurization]

  • If your systolic blood pressure is expected to exceed 200 mmHg, use Manual pressurization when taking a measurement.

  • Keep “ START/STOP” switch held pressed until the pressure value you want to stop pressurization is reached (approximately 40 mmHg higher than the Systolic blood pressure). You can stop pressurization by the unit by releasing the switch at the aforementioned value is reached.
    The upper pressure limit is 280 mmHg
    The Body movement indicator is displayed on the measurement results display if you move your hand or arm during measurement, causing a substantial pressure change to be detected.

  • If the Body movement indicator is displayed, measure your blood pressure again.
    If an irregular heartbeat is detected during measurement, the Irregular heartbeat (IHB) indicator is displayed after measurement is completed.
    An irregular heartbeat is defined as a heartbeat that varies by ± 25% from the middle of 5 heartbeat intervals during the blood pressure measurement.

  • Measurement may not be correct if your heartbeat fluctuates greatly during measurement. If the Irregular heartbeat (IHB) indicator is displayed, measure your blood pressure again.
    Caution
    If the Irregular heartbeat (IHB) indicator appears frequently, you are advised to consult a doctor about your health condition.

Hypertension Classification Indicator
The measured blood pressure value is displayed according to the WHO standards.
( See page 2)CITIZEN CH 456 Digital Blood Pressure Monitor - WHO
standards

TIPS FOR OBTAINING ACCURATE MEASUREMENTS

Your blood pressure varies according to your posture, the time of day and a range of other factors. Ideally, you should measure your blood pressure in the same posture at the same time every day.

Taking measurements while sitting

  • Be seated comfortably with your feet flat on the floor, and don’t cross your legs.

    1. Place your arm on a table or similar surface with your forearm extended.
    2. It is important to have the cuff level with your heart.
    3. Open your hand slightly on the table so that your palm is facing up and your fingers are relaxed.
    4. Do not move your body or talk while taking the measurement.

Measurement in a reclining posture

  • Relax yourself to avoid placing pressure on the cuff.
    CITIZEN CH 456 Digital Blood Pressure Monitor - reclining
postureYou may use your right arm to measure your blood pressure.
    Blood pressure value is likely to differ by as much as 10 mmHg when measured on the right arm instead of the left (or vice-versa). Measure your blood pressure on the same arm each day.

CALLING UP THE DATA STORED IN MEMORY

90 measurement results can be stored in Memory.
The average value is calculated automatically to help you manage your daily health.

  1. Press the Memory switch once.
  • Example of display when the
    Memory switch is pressed.
    indicating the average value appears at the bottom of the display. Then the average value, based on the last three measurements, is displayed.
    *(and the average value do not appear if there are two or fewer measurements stored in memory.)
    CITIZEN CH 456 Digital Blood Pressure Monitor - average
value

    1. If you press the Memory switch again, past measurement data are displayed.
      Each time you press the switch, the measurement data are displayed in order from the most recent to the oldest.
  • You can fast-forward the data numbers in display by pressing and holding the Memory switch.

  • Example of display when the Memory switch is pressed.CITIZEN CH 456 Digital Blood Pressure Monitor - Switch pressed● The value stored in memory is numbered in the order of measurements. For example, when 90 sets of data are stored in memory, the data number 1 represents the latest data.CITIZEN CH 456 Digital Blood Pressure Monitor - data number

HOW TO DELETE THE DATA

  1. While pressing the Memory switch, press and hold the “ START/STOP” switch for more than 3 seconds.
    All data stored in Memory will be deleted.

CITIZEN CH 456 Digital Blood Pressure Monitor - Delete the
data

ABOUT “BLOOD PRESSURE”

What is blood pressure?
The heart is a pump that circulates blood throughout your body. Blood is pumped from the heart at a constant pressure into arteries. This pressure is called the arterial blood pressure and represents, in general terms, your blood pressure. Blood pressure is  indicated by several kinds of pressures, including the systolic pressure that occurs when the heart pumps blood, and the diastolic pressure that occurs when blood returns to the heart.
CITIZEN CH 456 Digital Blood Pressure Monitor - Blood
Pressure

Your blood pressure changes all the time.
Your blood pressure differs according to your age, gender and a range of other factors. It is likely to be affected by your biorhythm during the day and by your posture, physical activities, mental activities, level of stress and even by the air temperature. The blood pressure of a healthy person generally varies within a day.
[Example of blood pressure variations within a day]
CITIZEN CH 456 Digital Blood Pressure Monitor - Blood Pressure
variations (Blood pressure values measured at five-minute intervals through the day)
● Bevan AT, Honour AJ, Stott
FH. Clin Sci 1969;36:329-44.

BLOOD PRESSURE Q & A

Q. Why is the blood pressure measured at home different from that measured by the physician or at a hospital?

A. Your blood pressure may vary due to exercise, the ambient temperature or your mental state. When you have a physician or nurse measure your blood pressure, the pressure value is likely to be 10 to 20 mmHg higher than usual due to anxiety and/or stress. Knowing what affects your blood pressure helps you to better monitor your health.

Q. Why does the blood pressure obtained vary with measurement?

A. Our blood pressure is adjusted by automatic nerve function. Blood pressure differs with every eart beat. We are likely to think that our blood pressure is constant, but it varies if you take measurements in repetition. Blood pressure is susceptible to the time of day, such as morning and afternoon, season and atmospheric temperature. In addition, blood pressure is easily affected by mental stress or emotional ups and downs. It tends to increase when you feel tension or decrease when you are relaxed.

Q. What is the benefit of measuring my blood pressure at home?

A. Blood pressure measurements taken at home give reliable data as they can be taken when you are in a stable and relaxed condition. Physicians place considerable importance on blood pressure measurements taken at home. You should measure your blood pressure at the same time each day and record the variations in your blood pressure.

Always consult your physician for an interpretation of your blood pressure readings and to determine the proper treatment.

KEY TO DISPLAY ICONS

DISPLAY MARK CONDITION/CAUSE CORRECTIVE ACTION
Appears when the cuff is attached too loose. Attach the cuff properly and

measure again.
( See page 10 “ATTACHING THE CUFF”)
| Appears when the cuff is not attached correctly and the pulse cannot be detected.
| Appears when the pressure is 300mmHg or higher.
| The pressure is 281 mmHg or higher.| If the pressure does not automatically decline during measurement, immediately press
the “ START/STOP” switch and turn the unit off. Take the measurement again.
| Appears when the batteries have run out.| Replace the batteries. ( See page 7 “REMOVING THE BATTERIES”.)
| Appears when the pulse rate falls outside the measuring range (below 39 beats/min. or above 181 beats/min.)| Attach the cuff properly again.
Take deep breaths to relax, and measure again. ( See page 13 “TIPS FOR OBTAINING ACCURATE MEASUREMENT”.)
| The unit does not function properly.| Contact the store where it was purchased or your local service center. ( See page 17 “BEFORE REQUESTING REPAIRS OR TESTING”.)

BEFORE REQUESTING REPAIRS OR TESTING

Make sure to check the following before sending your blood pressure monitor away to be tested or repaired.

Problem Checks Response
Display stays blank when you press the “ START/ STOP” switch. Check whether
the batteries are dead. Replace all the batteries with new ones.

Check whether the batteries are installed the right way round ( and oriented correctly).| Load the batteries in the correct direction.
No measurements can be taken.| Check whether the measurement icon is displayed.| Attach the cuff properly.
Check whether the cuff is attached correctly.|
Did you stay calm during measurement?| Measure your blood pressure again, making sure to remain still.
Note that blood pressure measurement may not be possible for someone with an extremely weak pulse or cardiac arrhythmia (irregular pulse).
Your blood pressure readings are abnormally high or low compared with those taken in hospital.| See page 16.
Other phenomena| Remove the batteries from the unit and change them with new ones.

  • lf you want to dispose this product, do not mix with general household waste.
    There is a separate collection systems for used electronics products in accordance with legislation.

SPECIFICATIONS

Model number: CH-456
Measurement system: Oscillometric method
Measurement localization Upper arm
Cuff: Soft cuff
Cuff circumference range: 22.0 – 32.0 cm
Measurement range: Pressure
Pulse 40 to 180 pulse/min
Accuracy: Pressure
Pulse ±5% of reading
LCD displays: Pressure
Pulse 3 digits
Icons : Measurement icon

: Battery icon
: Irregular heartbeat (IH) indicator
: Body movement indicator
: Memory icon
:Average indicator
: Hypertension classification indicator
Switch:| 4 ( , START/STOP, MEMORY)
Inflation:| Automatic Inflation by internal pump
Deflation:| Automatic speed deflation system.
Rated voltage:| 6V DC
3W ( ****: direct current)
Exhaust:| Electromagnetic quick exhaust valve
Power supply:| 4 AA batteries (R6P, LR6)
Battery duration:| Alkaline| Approx. 500 times| (170 mmHg, once/day, 23°C, Use Cuff)
Manganese| Approx. 150 times
Automatic power off function:| Approx. 3 min. (after activated)
Main unit dimensions:| 105 (W) X 166 (H) X 122 (D) mm
Cuff size:| Approx. 144 x 492 mm
Weight:| Unit: approx. 390q w/o batteries
Cuff: approx. 130g
Operating conditions:| Temperature| 10°C — 40°C
Humidity| 15% to 85% RH
Storage conditions:| Temperature| -20°C — 60°C
Humidity| 10% to 95%RH
Electric shock protection:| Internal power unit
Degree of protection| Type BF applied part
Mode of operation:| Continuous operation
Memory:| 90 readings, average of last 3 readings
Service life:| 5 years
Cuff’s life:| Approx. 2000 times
Accessories:| Set includes an cuff, 4 AA batteries (R6P) for the monitor, Instruction Manual
Optional accessories:| Large cuff 32.0 – 42.0 cm, AC adapter

  • Applied part for this device is Cuff.
  • A range in barometric pressure 700 hPa to 1060 hPa
  • Overall system accuracy of this device is met with the requirement of item 7.9 of EN1060-3.
    EN1060-3 : Non-invasive sohygmomanometers Part 3 (European Standard)

ELECTOROMAGNETIC COMPATIBILITY INFORMATION
WARNING :

  • Portable RF communications equipment should be used no closer than 30 cm (12 inches) to any part of the [CH-456], including cables specified.
  • Use of this equipment adjacent to or stacked with other equipment should be avoided.
  • Use of accessories and options other than those specified (other than CITIZEN original parts) could result in increased electromagnetic emissions or decreased electromagnetic immunity of this equipment.

Guidance and manufacturer’s declaration – electromagnetic emissions

The [CH-456] is intended for use in the electromagnetic environment specified below. The customer or the user of the [CH-456] should assure that it is used in such an environment.
Emissions test| Compliance| Electromagnetic environment – guidance
RF emissions CISPR 11| Group 1| The [CH-456] 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 [CH-456] 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| Class A
Voltage fluctuations/ flicker emissions IEC 61000-3-3| Complies
Guidance and manufacturer’s declaration – electromagnetic immunity

The [CH-456] is intended for use in the electromagnetic environment specified below. The customer or the user of the [CH-456] 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| ±8 kV contact
±15 kV air| ±8 kV contact
±15 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%.
Electrical fast transient/burst
IEC 61000-4-4| ±2 kV for power supply lines
±1 kV for input/output lines| ±2 kV for power supply lines
±1 kV for input/output lines| Mains power quality should be that of a typical commercial or hospital environment.
Surge IEC 61000-4-5| ±1 kV line to line
±2 kV line to earth| ±1 kV line to line
±2 kV line to earth| Mains power quality should be that of a typical commercial or hospital environment.
Voltage dips, short interruptions and voltage variations on power supply
IEC 61000-4-11| 0% UT
0.5 cycle| 0% UT
0.5 cycle| Mains power quality should be that of a typical commercial or hospital environment. If the user of the [CH-456] requires continued operation during power mains interruptions, it is
recommended that the [CH-456] be powered from an uninterruptible power supply or a battery.
0°/0 UT
1 cycle| 0% UT
1 cycle
70% UT
25/30 cycle| 70 UT
25/30 cycle
0% UT
250/300 cycle| 0% UT
250/300 cycle
Power frequency (50/60 Hz)
magnetic field IEC 61000-4-8| 30 A/m| 30 A/m| Power frequency magnetic fields should be at levels characteristic of a typical location in a typical commercial or hospital environment.

Note: UT is the A.C. mains voltage prior to application of the test level.

Guidance and manufacturer’s declaration – electromagnetic immunity

The [CH-456] is intended for use in the electromagnetic environment specified below. The customer or the user of the [CH-456] should assure that it is used in such an environment.
Conducted
RF
IEC
61000-4-6
Radiated
RF
IEC
61000-4-3| 3 Vrms. 6 Vrms
150 kHz
to
80 MHz
10 V/m
80 MHz
to
2.7 GHz| 3 Vrms,
6 Vrms

10 V/m| Portable and mobile RF communications equipment should be used no closer to any part of the CH-456]. including cables, than the recommended separation distance calculated from the equation applicable to the frequency of the transmitter.
Recommended separation distance
d = 1.2 √P 3 Vrms
d = 2 √P 6 Vrms
(in ISM and amateur radio bands)
d = 1.2 √P 80 MHz to 800 MHz
d = 2.3 √P 800 MHz to 2.7 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 the 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 from structures, objects and people.
a).Field 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 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 [CH-456] is used exceeds the applicable RF compliance level above, the [CH-456] should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the [CH-456].
b).Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended separation distances between portable and mobile RF communications equipment and the [CH-456]

The [CH-456] is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of the [CH-456] can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and [CH-456] 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
3 Vrms
d = 1.2 √P| 150 kHz to 80 MHz
6 Vrms
d= √P| 80 MHz to 800 MHz
d= 1.2 √P| 800 MHz to 2.7 GHz
d = 2.3 √P
0.01| 0.12| 0.2| 0.12| 0.23
0.1| 0.38| 0.63| 0.38| 0.73
1| 1.2| 2| 1.2| 2.3
10| 3.8| 6.3| 3.8| 7.3
100| 12| 20| 12| 23
For transmitters rated at a maximum output power not listed above, the recommended separation distance d 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.
Guidance and manufacturer’s declaration – electromagnetic immunity

The [CH-456] is intended for use in the electromagnetic environment specified below. The customer or the user of the [CH-456] should assure that it is used in such an environment.
Immunity to proximity fields from RF wireless communications
equipment IEC 61000-4-3| Test Frequncy (MHz)| Band a) (MHz)| Servicea)| Modulationb)| Maximum power (W)| Distance (m)| IMMUNITY TEST LEVEL (V/m)
385| 380-390| TETRA 400| Pulse modulationb) 18 Hz| 2.| 0.3| 27
450| 430-470| GMRS 460, FRS 460| FM c) ± 5 kHz deviation
1 kHz sine| 2| 0.3| 28
710| 704-787| LTE Band 13, 17| Pulse modulationb) 217 Hz| 0.2| 0.3| 9
745
780
810| 800-960| GSM 800/900, TETRA 800,
iDEN 820, CDMA 850,
LTE Band 5| Pulse modulationb) 18 Hz| 2| 0.3| 28
870
930
1720| 1700- 1900| GSM 1800; CDMA 1900; GSM 1900; DECT; LTE Band 1, 3, 4, 25; UMTS| Pulse modulationb) 217 Hz| 2| 0.3| 28
1845
1970
2450| 2400- 2570| Bluetooth, WLAN, 802.11 b/g/n, RFID 2450, LTE Band 7| Pulse modulationb) 217 Hz| 2| 0.3| 28
5240| 5100- 5800| WLAN 802.11a/n| Pulse modulationb) 217 Hz| 0.2| 0.3| 9
5500
5785
NOTE If necessary to achieve the IMMUNITY TEST LEVEL, the distance between the transmitting antenna and the [CH-456] may be reduced to 1 m. The 1 m test distance is permitted by IEC 61000-4-3.
a).For some services, only the uplink frequencies are included.
b).The carrier shall be modulated using a 50 % duty cycle square wave signal.
c).As an alternative to FM modulation, 50 % pulse modulation at 18 Hz may be used because while it does not represent actual modulation, it would be worst case.

MEMO

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CH-456 Digital Blood Pressure Monitor, CH-456, Digital Blood Pressure Monitor, Blood Pressure Monitor, Pressure Monitor, Monitor
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