Machine B21H Introduction

The Ciekka Blood Pressure Monitor Machine B21H is a user-friendly device designed to help individuals easily monitor their blood pressure at home. Featuring an automatic inflation system, this digital monitor provides accurate readings of systolic and diastolic pressure, along with pulse rate. Its large LCD display ensures readability, while the memory function allows users to track their measurements over time. Compact and portable, it is ideal for daily health monitoring. The Ciekka B21H is priced at approximately $30.

Technical Specifications

Model: B21H
Wight: 296g(batteries and AC adapter is not included)
Display: 4.13”x2.72”’ LCD Digital Display
Size: 105 (W) x 129 (L) x 56(H) mm
Accessories: 1×Main Device, 1×Cuff, 1×Users manual,
Operating Conditions: Temperature: 5℃ to 40℃;Humidity: 15% to 93% RH; Pressure altitude:70KPa~ 106Kpa
Storage And Shipping Conditions:Temperature: -25℃ to 70℃; Humidity: ≦93% RH; Pressure altitude: 70KPa~ 106Kpa
Measuring method: Oscillometric
Pressure sensor: Resistive
Measuring range: DIA: 40-130mmHg; SYS: 60-230mmHg
Pulse: 40 to 199 per minute
Cuff pressure display range: 0–295 mmHg
Memory: Automatically stores the last 120 measurements for 2 users (total 240) Measuring resolution: 1 mmHg
Accuracy: Pressure within ± 3 mmHg / pulse ± 5 % of the reading
Power source: a) 3 AA batteries, 1.5 V
b) AC adapter INPUT：100-240VAC 50/60HZ OUTPUT：5VDC 1A Accessories: Wide range rigid cuff 8.7” – 16.8” (22 – 42 cm)
Automatically power off : 60 seconds
Users: Adult
Expected service life of the device and accessories: 5 years
Technical alterations reserved!

Important Information on Blood Pressure and its Measurement

How does high or low blood pressure arise?
Your level of blood pressure is determined in the circulatory center of the brain and adjusts to a variety of situations through feedback from the nervous system. To adjust blood pressure, the strength and speed of the heart (Pulse), as well as the width of circulatory blood vessels is altered.Blood vessel width is controlled by fine muscles in the blood vessel walls.
Your level of arterial blood pressure changes periodically during heart activity: During the “blood ejection” (Systole) the value is highest (systolic blood pressure value). At the end of the heart’s “rest period” (Diastole) pressure is lowest (diastolic blood pressure value).

Which values are normal?
Please refer to the diagram below(Picture-01)

which_values_are_normal_ciekka_blood_pressure_monitor_machine_b21h.png

There are six grids in the display of device. Please refer to the picture-01-01. Different grids represent different interval scales of WHO.

Blood pressure value	WHO grids in device	WHO Classification
DIA < 80 & SYS < 120	1	Optimal blood pressure
DIA < 85 & SYS < 130	2	Normal blood pressure
DIA < 90 & SYS < 140	3	High normal value
DIA < 100 & SYS < 160	4	Mild hypertension
DIA < 110 & SYS < 180	5	Moderate hypertension
DIA >= 110 or SYS >= 180	6	Severe hypertension

Components of your blood pressure monitor

Measuring unit

Symbols on the LCD display

lcd_display_ciekka_blood_pressure_monitor_machine_b21h.png

WHO Function symbol ;
Diastolic blood pressure ;
Heartbeat symbol (Flashes during measurement);
Pulse display ;
Average value symbol ;
Memory symbol ;
Irregular heartbeat symbol;
Movement error symbol;
Cuff self-checking function ;
Date/Time display;
Battery low symbol;
Mute symbol;
USER 2
Pulse unit symbol;
Systolic blood pressure

Features of Model B21H

Talking function
Double users: 2 x 120 sets memory
Cuff self-checking function
Irregular heartbeat checking
Average value function
Low battery display
WHO function
Auto power-off
External power adapter support
Volume adjustment
Date/time display

Description

The Ciekka Blood Pressure Monitor Machine B21H is designed with user convenience in mind. The device features an ergonomic design that fits comfortably on the upper arm, ensuring accurate readings every time. It comes with two cuffs – one standard and one large – to accommodate different arm sizes. The monitor itself is lightweight and compact, making it easy to store or travel with.

The large LCD display shows not only the systolic and diastolic pressure but also the pulse rate. The blood pressure classification indicator provides a quick visual cue about the healthiness of your reading, helping you take immediate action if necessary.

Using your Monitor for the First Time

System Settings
After you load the battery or connect power for the monitor
1. Setting the Users
  Press the and then you can set the A/B user
2. Memory query
  Press the button and then press button,Can view the memory under the current user
3. Setting the Year/Month&Date/Time/Volume
  Long press the button for more than 3s, and then you can start to set.

Setting the Year:

Initial year is 2021, when the year display is flashing, press the Adjust up and down button, the year will increase by I year each, hold the Adjust up and down button and it will increase continuously 1 by 1, until 2049, and then rollover to 2021, once the year Setting is OK, press button to confirm.

Setting Month/Date:
Initial Month/Date is 1/01, when the Month display is flashing, press the Adjust up and down button, the month will increase by 1, press button to confirm, and do in the same way to set the date. Press button to confirm.

Setting Time :
When the hour display is flashing, press the memory button, the hour will increase by 1, press button to confirm, and do in the same way to set the minute. Pressbutton to confirm.

Setting Volume:
When display with SP is flashing, press djust up and down button to switch volume 1, volume 2, volume 3 or OFF. Press button to confirm.

Record Delete
When you checking the memory data, long press button to delete existing user measurement data.

Note:
You can’t delete all measurement record from the monitor storage at one time, if you decide to delete the all record, please keep the record in another way, in case you need it some days later. Take the battery out won’t lead to a record missing.

Cuff tube connection
Insert the cuff tube into the opening on the left side of the monitor indicated by the drawing of a cuff.

Measurement Procedure

Note: You should always be seated and calm before and during measurement.

Before measurement:

Avoid eating and smoking as well as all forms of exertion directly before measurement. These factors influence the measurement result. Find time to relax by sitting in an armchair in a quiet atmosphere for about ten minutes before taking a measurement.
Remove any garment that fits closely to your upper arm.
Always measure on the same arm (normally left).
Always compare measurements taken at the same time of day, since blood pressure changes during the course of the day, as much as 20-40 mmHg.

Fitting the Cuff

Please refer to picture-04

The cuff is preformed for easier use. Remove tight or bulky clothing from your upper arm.

Wrap the cuff around your upper left arm. The rubber tube should be on the inside of your arm extending downward to your hand. Make certain the cuff lies approximately 2to3 cm) above the elbow. Important! The on the edge of the cuff (Artery
Mark) must lie over the artery which runs down the inner side of the arm.
To secure the cuff, wrap it around your arm and press the hook and loop closure together.
There should be little free space between your arm and the cuff. You should be able to fit 2 fingers between your arm and the cuff. Cuffs that don’t fit properly result in false measurement values. Measure your arm circumference if you are not sure of proper fit.
Lay your arm on a table (palm upward) so the cuff is at the same height as your heart. Make sure the tube is not kinked.
Remain seated quietly for at least two minutes before you begin the measurement

Measure Procedure

Refer to picture 05

The monitor is designed to take measurements and store the measurement values in memory for two people using User ID 1 and User ID 2.

Sit comfortably in a chair with your feet flat on the floor.
Select your User ID (1 or 2).
Stretch your arm forward on the desk and keep relaxing, make sure the palm of hand is upturned. Make sure arm is in correct position, to avoid body movement. Sit still and do not talk or move during the measurement.
After the cuff has been appropriately positioned on the arm and connected to the blood pressure monitor, the measurement can begin:

Operate on the device

Press the Stop/Start button. The pump begins to inflate the cuff. In the display, the increasing cuff pressure is continually displayed.
After automatically reaching an individual pressure, the pump stops and the pressure slowly falls. The cuff pressure is displayed during the measurement.
When the device has detected your pulse, the heart symbol in the display begins to blink.
When the measurement has been concluded, the measured systolic and diastolic blood pressure values, as well as the pulse will be displayed.
The measurement results are displayed until you switch the device off. If no button is pressed for 60seconds, the device switches off automatically.
Cuff self-checking symbol ( )
The cuff correct symbol( ) will be displayed if the cuff position is correct, otherwise the wrong symbol( ) will be displayed. Please check again the cuff if the wrong symbol( ) is displayed.
Movement error symbol ( )
The Movement Error Symbol ( ) is displayed if you move your body during the measurement. Please remove the cuff, and wait 2-3 minutes. Reapply the cuff and take another measurement.

Recommended Use Methods

recommendation that the PATIENT relax as much as possible and not talk during the measurement PROCEDURE
recommendation that 5 min should elapse before the first reading is taken
any reading can be affected by the measurement site, the position of the PATIENT, exercise, or the PATIENT’S physiologic condition
performance of the AUTOMATED SPHYGMOMANOMETER can be affected by extremes of temperature, humidity and altitude
To stop the inflation or measurement, push the START/STOP button. The monitor will stop inflating, start deflating, and will turn off.
After the monitor has detected your blood pressure and pulse rate, the cuff automatically deflates. Your blood pressure and pulse rate are displayed.
The monitor will automatically turn off after one minute.

Irregular Heartbeat Detector

This symbol indicates that certain pulse irregularities were detected during the measurement.In this case, the result may deviate from your normal basal blood pressure – repeat the measurement. Information for the doctor on frequent appearance of the Irregular Heartbeat Symbol This instrument is an oscillometric blood pressure monitor device that also analyzes pulse frequency during measurement.
The instrument is clinically tested.
If pulse irregularities occur during measurement, the irregular heartbeat symbol is displayed after the measurement. If the symbol appears more frequently (e.g. several times per week on measurements performed daily) or if it suddenly appears more often than usual, we recommend the patient to seek medical advice. The instrument does not replace a cardiac examination, but serves to detect pulse irregularities at an early stage.

Error Indicates

The following symbol will appear on the display when measuring abnormal.

SYMBOL	CAUSE	CORRECTION
No display appears	Weak battery or improper placement	Replace both batteries with new ones. Check the battery installation for proper placement of the battery polarities.
Er 1	Sensor abnormal	Check if the pump is working or not. If it is working, then the problem is sensor abnormal. Please send it to the local distributor.
Er 2	Monitor could not detect pulse wave or cannot calculate the blood pressure data	Check if the air releasing is too slow or not. If it is too slow, please check if there is any dust in the tube plug of the cuff and the cuff port in the device. If yes, please clean and start the measurement again. If no, please send the device back to the local distributor.
Er 3	Measurement result is abnormal (SYS ≦35mmHg, DIA≦23mmHg)	Occasionally-measure for one more time/ Always – send it to local distributor
Er 4	Too loose cuff or air leakage (Cannot inflate to 30mmHg within 15s)	Tie the cuff correctly and make sure the air plug is properly inserted in the unit
Er 5	The air tube is crimped	Correct it and make the measurement again
Er 6	The sensor is sensing great fluctuation in the pressure	Please keep quiet and don’t move
Er 7	The pressure that the sensor sensing is over the limit	Please send back to the local distributor
Er 8	The demarcation is incorrect or the device has not been demarcated	Please send back to the local distributor

Trouble removal

Problem	Check	Cause and solutions
No power	Check the battery power	Replace new one
	Check the polarity position	Installation for proper placement of the batteries polarities
No inflation	Whether the plug insert	Insert into the air socket tightly
	Whether the plug broken or leak	Change a new cuff
Err and stop working	Whether move the arm when inflate	Keep the body peaceful
	Check if chatting when measured	Keep quite when measure
Cuff leak	Whether the cuff wrap too loose	Wrap the cuff tightly
	Whether the cuff broken	Change a new cuff

⚠️ Please contact the distributor if you can’t solve the problem, do not disassemble the unit by yourself!

SYMBOL DESCRIPTIONS

The following symbols may appear in this manual, on the Digital Blood Pressure Monitor B21H, or on it’s accessories. Some of the symbols represent standards and compliances associated with the Digital Blood Pressure Monitor B21H and its use.

Memory

At the end of a measurement, this monitor automatically stores each result with date and time. Each unit stores 120 sets measurements for 2 users, totally 240 sets（ User 1 and 2）.

Viewing the stored values

With the unit off, press the Memory button.The display first shows “ CIEKAA-B21H-Blood-Pressure-Monitor-26 “,Then shows an average of last 3 times measurements stored in the unit. Please note: Measurements for each user are last 3 times average and stored separately. Be certain that you are viewing the measurements for the correct user. Pressing the Memory button again displays the previous value. To view a particular stored memory, press and hold the Memory button to scroll to that stored reading.

Discontinuing a Measurement

If it is necessary to interrupt a blood pressure measurement for any reason (e.g the patient feels unwell), the Start/Stop button can be pressed at any time. The device then immediately lowers the cuff pressure automatically.

Battery Change Indicator

Batteries discharged– replacements required
When the batteries are discharged, the battery symbol will flash as soon as the instrument is switched on. You cannot take any further measurements and must replace the batteries.

The battery compartment is located on the back side of the unit

Remove cover from the bottom plate, as illustrated below picture-06
Insert the batteries (3 x size AA ). Always use AA long life batteries or alkaline 1.5v batteries.
The memory retains all values although date and time must be reset – the year number therefore flashes automatically after the batteries are replaced.
To set date and time, follow the procedure described in Section 4.2.

battery_change_indicator_ciekka_blood_pressure_monitor_machine_b21h.png

Which batteries and which procedure?
Use three new, longlife 1.5V AA batteries. Do not use batteries beyond their expiration date. If the monitor is not going to be used for a prolonged period the batteries should be removed.

Using rechargeable batteries

You can also operate this instrument using rechargeable batteries.

Only use “NiMH” reusable batteries!
If the battery symbol the batteries must be removed and recharged! They must not remain inside the instrument, as they may become damaged through total discharge even when switched off. The batteries must NOT be discharged in the blood pressure monitor! If you do not intend to use the instrument for a week or more, always remove the rechargeable batteries!
Recharge these batteries using an external charger and follow manufacturer’s instructions Carefully.

Using the AC Adapter

You may also operate this monitor using the AC adapter (output 5V DC/1A with TYPE-C plug). Use only the approved AC adapter to avoid damaging the unit（class II).

Ensure that the AC adapter and cable are not damaged.
Plug the adapter cable into the AC adapter port on the right side of the blood pressure monitor.
Plug the adapter into your electrical outlet. When the AC adapter is connected, no battery current is consumed.

Note: No power is taken from the batteries while the AC adapter is connected to the monitor. If electrical power is interrupted, (e.g., by accidental removal of the AC adapter from the outlet) the monitor must be reset by removing the plug from the socket and reinserting the AC adapter connection.

Setup Guide

To set up and operate the Ciekka Blood Pressure Monitor Machine B21H, follow these steps:

Unpack and Assemble: Remove all contents from the box and assemble the device according to the included instructions.
Choose Cuff Size: Select the appropriate cuff size based on your arm circumference.
Place Cuff: Wrap the cuff snugly around your upper arm about an inch above your elbow.
Turn On Device: Press the power button to turn on the monitor.
Take Reading: The device will automatically inflate and deflate; wait for it to complete its cycle before removing the cuff.
View Results: Your blood pressure and pulse rate will be displayed on the screen.

Care and Maintenance

Wash hands after each time measurement.
If one device is used by different patients, wash hands before and after each use.

Do not expose the device to either extreme temperatures, humidity, dust or direct sunlight.
The cuff contains a sensitive air-tight bubble. Handle this cuff carefully and avoid all types of stress through twisting or buckling.
Clean the device with a soft, dry cloth. Do not use gas, thinners or similar solvents. Spots on the cuff can be removed carefully with a damp cloth and soapsuds. The cuff with bladder must not be washed in a dishwasher, clothes washer, or submerged in water.
Handle the tube carefully. Do not pull on it. Do not allow the tubing to kink and keep it away from sharp edges.
Do not drop the monitor or treat it roughly in any way. Avoid strong vibrations.
Never open the monitor! This invalidates the manufacturer’s warranty.
Batteries and electronic instruments must be disposed of in accordance with the locally applicable regulations, not with domestic waste.

Accuracy test
Sensitive measuring devices must be checked for accuracy from time to time. We recommend a periodical inspection of your unit by an authorized dealer every 1 years. Please turn to local distributor or the manufacturer.

Intended Use

The B21H is a fully automatic digital blood pressure monitor that uses the oscillometric method to measure systolic and diastolic blood pressure as well as pulse. The device is I tended for personal use at home or in a clinical setting.

Warnings and Precautions

The use of accessories not specified or provided by the manufacturer may cause electromagnetic radiation to increase or decrease electromagnetic immunity, resulting in operational failure.
The device may fail to yield specified measurement accuracy if operated or stored in temperature or humidity conditions outside the limits stated in the specifications section of the manual.
The separate AC adapter intended to connect TYPE-C interface of Blood Pressure Monitor has not been evaluated according to IEC 60601-1. The safety of the product shall be reappraised when it power supply by a separate AC adapter.
The device is not suitable for use in the presence of flammable anesthetic mixtures with air or with oxygen or nitrous oxide.
This device cannot be used together with HF surgical equipment.
Too frequent measurements can cause injury to the patient due to blood flow interference.
Don’t place the cuff over a wound part.
Pressurization of the cuff can temporarily cause loss of function of simultaneously used monitoring ME equipment on the same limb.

Usage Instructions

Before using the B21H, read the instruction manual carefully and keep it in a safe place.
Use only the accessories specified or provided by the manufacturer.
Ensure that the device functions safely and is in proper working condition before use.
Do not use the device in temperature or humidity conditions outside the limits specified in the manual.
Connect the separate AC adapter to the TYPE-C interface of the device.
Avoid using the device in the presence of flammable anesthetic mixtures with air or with oxygen or nitrous oxide.
Use power adapters with input 100-240v, 50/60Hz output DC 5V 1A.
Avoid positioning the device in areas prone to water leakage, high temperature, moisture, direct sunlight, or more corrosive gas environment.
Avoid taking measurements too frequently as it may cause injury to the patient due to blood flow interference.
Do not place the cuff over a wound part.
To avoid any possibility of accidental strangulation, keep the unit away from children and do not drape tubing around your neck.
For accurate readings, avoid movement and talking during measurement.
Self-measurement means control, not diagnosis or treatment.
Unusual values must always be discussed with a doctor. Do not alter the dosages of any drugs prescribed by a doctor.
Do not use the pulse display to check the frequency of heart pacemakers.

Introduction and Intended Use

This manual is for B21H models. It is a fully automatic digital blood pressure It enables reliable measurement of systolic and diastolic blood pressure as well as pulse through the oscillometric method. Before using, please read this instruction manual carefully and then keep it in a safe place.

Remember

Only a health-care professional is qualified to interpret blood pressure measure-ments.
This device is NOT intended to replace regular medical checkups.
Blood pressure readings obtained by this device should be verified before prescribing or making adjustments to any medications used to control hyperten-sion. Under no circumstances should YOU alter the dosages of any drugs prescribed by your doctor.
This monitor is intended for use by adults only. Consult with a physician before using this instrument on a child.
In cases of irregular heartbeat, measurements made with this instrument should only be evaluated after consultation with your doctor.
Host products, including accessories, shall be processed in accordance with local regulations after reaching the life cycle.

Warnings and Precautions

Warning:

The use of other accessories other than those specified or provided by the equipment manufacturer may cause electromagnetic radiation to increase or decrease electromagnetic immunity resulting in operational failure
This system may fail to yield specified measurement accuracy if operated or stored in temperature or humidity conditions outside the limits stated in the specifications section of this manual.
The separate ac adapter which is intended to connect TYPE-C interface of Blood Pressure Monitor has not been evaluated according to IEC 60601-1. The safety of the product shall be reappraised when it power supply by a separate ac adapter.
The user must check that the equipment functions safely and see that it is in proper working condition before being used.
The device is not suitable for use in the presence of flammable anesthetic mixtures with air or with oxygen or nitrous oxide.
The patient is an intended operator, the functions of monitoring blood pressure and pulse rate can be safely used by patient. The routine clean and changing batteries can be performed by the patient.
This device can not be used together with hf surgical equipment.
Use of power adapters
- Adapter: input 100-240v, 50/60hz output DC 5V 1A
- Do not to position the device to make it difficult to operate the disconnection device while using adaptor.
- Do not be prone to water leakage, high temperature, moisture, direct sunlight and more or more corrosive gas environment. And Do not use this product in the above environment.
Too frequent measurements can cause injury to the PATIENT due to blood flow interference.
Don’t place the cuff over wound part.
Pressurization of the CUFF can temporarily cause loss of function of simultaneously used monitoring ME EQUIPMENT on the same limb.

Caution:

To avoid any possibility of accidental strangulation, keep this unit away from children and do not drape tubing around your neck.
To avoid damaging the device, keep this unit away from children and pets.
The standard material used for the bladder and tubing is latex-free.

Attention:

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 irregular heartbeat, measurements made with this instrument should only be evaluated after consultation with your doctor.

Note:

To obtain the greatest accuracy from your blood pressure instrument, it is recommended that the instrument be used within the specified temperature and the relative humidity, please see the Technical Specifications.
The cuff is treated as the applied part.The user should contact the manufacturer for assistance, if needed, in setting up, using or maintaining the device.
This device contains sensitive electronic components. Avoid strong electrical or electromagnetic fields in the direct vicinity of the device (e.g. mobile telephones, microwave ovens) during use. These can lead to erratic results.
Do not attempt to service or repair this device yourself. Should a malfunction occur, refer to local distributor or the manufacturer.

Troubleshooting

If you encounter any issues with your Ciekka Blood Pressure Monitor Machine B21H, here are some common problems and solutions:

Inaccurate Readings: Ensure proper cuff placement and avoid moving during measurement.
No Power: Check if batteries are installed correctly or if they need replacement.
Display Issues: Clean the screen gently using a soft cloth; avoid touching it excessively.

Always refer to the user manual for specific troubleshooting steps as outlined by the manufacturer.

EMC Declaration

This product needs special precautions regarding EMC and needs to be installed and put into service according to the EMC information provided, and this unit can be affected by portable and mobile RF communications equipment.
Do not use a mobile phone or other devices that emit electromagnetic fields, near the unit. This may result in incorrect operation of the unit.
Caution: This unit has been thoroughly tested and inspected to assure proper performance and operation!
Caution: this machine should not be used adjacent to or stacked with other equipment and that if adjacent or stacked use is necessary, this machine should be observed to verify normal operation in the configuration in which it will be used

Guidance and manufacture’s declaration electromagnetic immunity

Guidance and manufacture’s declaration – electromagnetic immunity
The device is intended for use in the electromagnetic environment specified below. The customer or the user of device 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 ±2 kV, ±4 kV, ±8 kV, ±15 kV air	±8 kV contact ±2 kV, ±4 kV, ±8 kV, ±15 kV air	Floors should be wood, concrete or ceramic tile. If floor 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	Not applicable	Mains power quality should be that of a typical commercial or hospital environment.
Surge IEC 61000-4-5	± 1 kV line(s) to line(s) ± 2 kV line(s) to earth	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	0 % UT; 0.5 cycle at 0°,45°,90°, 135°, 180°, 225°, 270°, 315° 0 % UT ; 1 cycle 70 % UT; 25/30 cycle 0% UT; 250/300 cycle	Not applicable	Mains power quality should be that of a typical commercial or hospital environment. If the user of the device requires continued operation during power mains interruptions, it is recommended that the device be powered from an uninterruptible power supply or a battery.
Power frequency (50Hz/60Hz) magnetic field IEC 61000-4-8	30 A/m 50/60Hz	30 A/m 50/60Hz	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.

Conducted RF IEC 61000-4-6

3 Vrms

150 kHz to 80 MHz 3 V RMS outside the ISM band, 6 V RMS in the ISM and amateur bands

80% AM at 1kHz

Not applicable

Portable and mobile RF communications equipment should be used no closer to any part of the device, including cables, than the recommended separation distance calculated from the equation applicable to the frequency of the transmitter.

Recommended separation distance

d=0.35√p d=1.2√p

Radiated RF IEC 61000-4-3

10 V/m

80 MHz to 2.7 GHz 80% AM at 1kHz

10 V/m

80 MHz to

2.7 GHz 80% AM at 1kHz

80MHz to 800MHz：

d=1.2√p

800MHzto 2.7GHz：

d=2.3√p

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.

Field strengths from fixed RF transmitters, as determined by an electromagnetic site survey, should be less than the compliance level in each frequency range. 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 device is used exceeds the applicable RF compliance level above, the device should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as re-orienting or relocating the device.

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

Guidance and manufacture’s declaration – electromagnetic emission
The device is intended for use in the electromagnetic environment specified below. The customer of the user of the device should assure that it is used in such an environment.
Emission test	Compliance	Electromagnetic environment – guidance
RF emissions CISPR 11	Group 1	The device use 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 emission CISPR 11	Class B	The device is suitable for use in all establishments, including domestic establishments other than domestic and those directly connected to the public low-voltage power supply network that supplies buildings used for domestic purposes.
Harmonic emissions IEC 61000-3-2	Not applicable
Voltage fluctuations/ flicker emissions IEC 61000-3-3	Not applicable

Recommended separation distances between portable and mobile RF communications equipment and the device

The device is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of the device can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the device as recommended below, according to the maximum output power of the communications equipment.

For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres (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.

The device is intended for use in the electromagnetic environment specified below. The customer or the user of the device, should assure that it is used in such an environment.

Guidance and manufacturer’s declaration – electromagnetic immunity
The device is intended for use in the electromagnetic environment specified below. The customer or the user of the device, should assure that it is used in such an environment.							-
Test frequency (MHz)	Band ^a) (MHz)	Service a)	Modulation a)	Maximum power (w)	Distance (m)	IMMUNITY TEST LEVEL (V/m)	-
385	380-390	TETRA 400	Pulse Modulation b) 18 Hz	1.8	0.3	27	-
450	430-470	GMRS 460,	FM c)	2	0.3	28	-
		FRS 460	±5 kHz deviation				-
			1 kHz sine				-
710	704-787	LTE Band 13, 17	Pulse Modulation b) 217 Hz	0.2	0.3	9	-
745							-
780							-
810		GSM 800/900,	Pulse				-
810	800-960	TETRA 800, iDEN 820,	Modulation b) 18 Hz	2	0.3	28	-
870							-
							-
930		CDMA 850, LTE Band 5					-
1720	1700-1990	GSM 1800; CDMA 1900; GSM 1900; DECT; LTE Band 1,3	Pulse Modulation b) 217 Hz	2	0.3	28	-
1845							-
1970							-
		4,25;UMTS					-
2450	2400-2570	Bluetooth, WLAN 802.11 b/g/n,	Pulse Modulation b) 217 Hz	2	0.3	28	-
		RFID 2450,					-
		LTE Band 7					-
5240	5100-5800	WLAN 802.11 a/n	Pulse Modulation b) 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 ME EQUIPMENT or ME SYSTEM 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.							-
The MANUFACTURER should consider reducing the minimum separation distance, based on RISK MANAGEMENT, and using higher IMMUNITY TEST LEVELS that are appropriate for the reduced minimum separation distance. Minimum separation distances for higher IMMUNITY TEST LEVELS shall be calculated using the following equation: Where P is the maximum power in W, d is the minimum separation distance in m, and E is the IMMUNITY TEST LEVEL in V/m.							-

Ciekka Blood Pressure Warranty

Your blood pressure monitor is guaranteed for 1 years against manufacturers’ defects for the original purchaser only, from date of purchase. The warranty does not apply to damage caused by improper handling, accidents, professional use, not following the operating instructions or alterations made to the instrument by third parties.
Warranty only applies to the instrument. All accessories including the cuff are guaranteed for one year, TYPE-C charging cable is not included. There are no user serviceable parts inside. Batteries or damage from old batteries is not covered by the warranty.
Note: According to international standards, your monitor should be checked for accuracy every year.

Pros & Cons

Pros

Accurate Readings: Utilizes advanced technology for precise measurements.
User-Friendly Interface: Intuitive design makes it easy for anyone to use.
Multiple User Profiles: Convenient for households with multiple users needing monitoring.
Compact Design: Easy to store or travel with.

Cons

Battery Life: May require frequent battery replacements depending on usage.
Sensitivity to Movement: Requires stillness during measurement which can sometimes be challenging.
Additional Cost for Extra Cuffs: If you need larger or smaller cuffs than those provided, there may be an additional cost involved.

Customer Reviews

Customers have praised the Ciekka Blood Pressure Monitor Machine B21H for its accuracy and ease of use. Many appreciated the clear display and automatic features that simplify the process of taking blood pressure readings at home.

Some common complaints include issues with battery life and sensitivity to movement during measurement. However, these are general concerns with most blood pressure monitors rather than unique to this model.

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