Yolanda CS20C User manual

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File No.:XXXXXX
Body Composition Analyzer
User Manual
Model:CS20C
Shenzhen Yolanda Technology Co.,Ltd.

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Foreword
With the continuous development of clinical nutrition, how to accurately and comprehensively
evaluate the nutritional status of individuals, better implement clinical nutrition support treatment, and
promote early recovery, has been paid more and more attention by the general population. In recent
years, the rapid development of human composition determination methods can provide important
clinical nutritional information for assessing the nutritional status of the human body. On the one hand,
it can be used to prevent epidemic diseases such as obesity, and on the other hand, it can guide the
administration of reasonable diet and exercise. Bioelectrical impedance technology (BIA) is a
detection technology that extracts the electrical impedance information of the organism to reflect the
biomedical information related to the physiology and pathology of the organism. The human body
composition analysis is an important application branch of bioelectrical impedance technology, it is
through the detection of human body impedance information to get the parameters of each component
of the human body. Human body composition analyzer is simple, accurate, non-invasive, safe, low
cost and a wide range of people and other advantages, whether it is academic and commercial, have
been vigorously developed.
Thank you for purchasing the Intelligent Body Composition Analyzer.
Copyright 2021 by Shenzhen Yolanda Technology Co.,Ltd.
Rev.1.0
Printed in 08/05/2021.

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Catalogue
一、Product Overview ......................................................................................................................................................... 1
二、Description of warning and error sign or signal ............................................................................................................ 1
三、Safety Precautions......................................................................................................................................................... 1
四、Product introduction ..................................................................................................................................................... 3
五、Structure and component .............................................................................................................................................. 4
六、APP Operation Instructions .......................................................................................................................................... 8
七、Packing list.................................................................................................................................................................. 12
八、Battery Installation/Replacement ................................................................................................................................ 12
九、Cleaning/disinfection and Care ................................................................................................................................... 12
十、Trouble-shooting ......................................................................................................................................................... 13
十一、Standard List ........................................................................................................................................................... 13
十二、Disposal .................................................................................................................................................................. 14
十三、EMC ........................................................................................................................................................................ 14
十四、Warranty and warranty information ........................................................................................................................ 18
十五、Manufacturer and European Authorized Representative Information .................................................................... 19

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一、Product Overview
The Body Composition Analyzer mainly through the measurement of body weight, bioimpedance and height,
age, gender set to calculate the body's BMI, body fat rate, body water and other indicators; In addition, the data can
be directly uploaded to APP via Bluetooth or to server via WiFi connection, and then the server will push the data to
APP to generate in-depth test report. The body composition analyzer is suitable for individuals, family users and
other long-term monitoring of body obesity, to provide data reference for weight loss and muscle gain.
To ensure proper use, please be sure to read this user manual carefully, paying close attention to the safety
precautions.
In order to use this product correctly, please read the user manual before use.
In order to properly use this product, please carefully read the full text of this manual before using, in particular
the“safety precautions”section.
Please keep this instruction manual in a convenient place for reference.
二、Description of warning and error sign or signal
1.Warning instructions and precautions
The warning signs and graphic symbols in the manual are intended to enable you to use the product safely and
correctly and to prevent harm to you and others. Warning marks and graphic symbols are described as follows:
Warning/precautions symbols
Waring
Indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
cautions
Means a possibility of personal injury or property damage in case of
improper use.
Notes
Indicates the need for attention, if not attention may lead to incorrect use
of the product or property device damage.
2.Symbol description
Manufacturer information:
The manufacturer name and
address
Manufacture date
Serial Number
Batch code
Pile Limit 4 layers
Authorized representative
in the European
Community.
Refer to instruction manual. Medical device
Applied part of type BF Fragile,handle with care

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Keep Dry
The product should be
vertically up
1639
Complies with the European Medical Device Regulation(2017/745.Notified
Body is 1639.
Disposal in accordance with Directive 2002/96/EC(WEEE)
三、Safety Precautions
Warnings
1、Use object
·The target users of this product are the general population aged 18-60.
2、Potential safety hazards and use restrictions
·Concurrent use of this device and implantable medical electronic instruments,e.g.Cardiac Pacemaker.
·Concurrent use of this device and wearable medical electronic instruments,e.g.electrocardiograph.
·Concurrent use of this device and other medical electronic instruments for life support,e.g.mechanical heart.
·Slippery floor such as tile floor.
·Jumping onto the platform immediately after bath or with wet hands.
·Interference may occur in the vicinity of equipment marked with the following symbol .And the Analyzer
may interfere vicinity electrical equipment.
·No modification of this equipment is allowed. There is a risk of electrocution or injury. Nor can precise analysis
be guaranteed.
Any modification without permission is prohibited as such modification may result in unacceptable risks.
The maintenance of the equipment must be conducted by special personnel. Disassembly and maintenance of
the machine by oneself is prohibited. (Circuit diagram, list of components, drawing notes, calibration details and
other information have been provided to maintenance personnel.)
Cautions
Avoid storage in the following locations:
·Where there is water
·Where the device may be exposed to extreme temperatures, humidity, moisture, direct sunlight, dust, or salt air
·Where there is risk of shock or drop
·Where you store chemicals or full of corrosive gases
·Where in reach of the infants or children
·To enable the data transmission function, this product should be paired to a Bluetooth end at 2.4 GHz.
·Do not carry out maintenance or maintenance during use

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四、Product introduction
1.Intended use
1.1 The Body Composition Analyzer measures weight, body impedance and uses bioelectrical impedance
analysis(BIA)technology to estimate body fat percentage(body fat mass), total body water content, BMI in generally
healthy adults. The visceral fat rating and protein are only displayed on the APP.
1.2 It is intended for use in the home only.
2.Efficacy
2.1 This product is simple to use, and requires no specialized facilities or expertise to take measurements.
2.2 Measurements can be taken quickly and easily, causing minimal inconvenience to the patient during.
measurements.
3.Contraindication
3.1 This device is contraindicated for any female subject who may be suspected of, or is pregnant.
Besides provided inaccurate readings, the affects of this device on the fetus are unknown.
3.2 This device is contraindicated for any person who is connected to a wearable or implantable electronic device
or instrument such as a pacemaker or defibrillator.
4.Specifications
Product name Body Composition Analyzer
Model CS20C
Measurement Principle bioelectrical impedance analysis(BIA)
Weight measurement range 0.2-180kg
Pressure starting weight >5kg
Accuracy 0-50kg，0.2kg；50-100kg，0.3kg；100-150kg，0.4kg；150-180kg，0.5kg
Resolution ratio 0~100k
g
：0.05k
g
；>100k
g
：0.1k
g
Memory Capacity 20
Number of users 8
Power source 4*1.5V AAA battery
Size 310*310*25mm
Net weight 1.8kg（including battery）
EMC I、Class B
Degree of protection against
electric shock
Type BF applied part
Working Environment
Temperature :5℃～40℃ 41℉～104℉
Humidity ：30-90%RH
Atmospheric Pressure ：70kPa-106kPa
Transportation and Storage
Environment
Temperature ：-40℃-55℃ -40℉～131℉
Humidity ：0-93%RH (No condensation)
Atmospheric Pressure ：70kPa-106kPa
Applicable period 3 years
Manufacture date/Lot number See fuselage and gift box for details

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5.Wireless technology
The specification of wireless transmission
For Bluetooth：
Bluetooth 5.0
Valid Transmission Up to 10 meters
Receiver Bluetooth 4.0 enabled smart phones running android 4 and
above system version and iPhone 4s and above
Signal transmission 2.4G Bluetooth
Frequency 2.402-2.480 GHz
Bluetooth
Modulation Type
GFSK
For Wi-Fi：
Transmission type Wi-Fi
Val id
Transmission(Distance
between Wi-Fi APP and
Body Composition
Analyzer)
Up to 50 meters
Frequency Range 2412~2462MHz
Wi-Fi APP running
environment
Enable smart devices running android 4 and above system
version and iPhone 4s and above
WIFI Modulation Type BPSK/QPSK/16QAM/64QAM/DBPSK/DQPSK/CCK
五、Structure and component
1. External component
2. Display

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3. Product performance
a. The products are mainly composed of shell, glass, display screen, battery, weight test module, body fat test
module, Bluetooth module, WiFi module and mobile terminal application software。
b.Product basic information display description

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4、Basic information
This product can measure body weight, fat percentage, BMI and other indexes. After the measurement is
completed, the data will be transmitted to the mobile terminal application software through Bluetooth 4.0 or WiFi.
1、Measurement method

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Place in a hard and flat place for use, do not use on uneven soft materials (such as: soft floor, carpet or spring
pad, etc.), otherwise it can not be measured correctly.
• Do not place in direct sunlight, near heating equipment, air outlet of air conditioning
• Do not use in places with drastic temperature changes
• Do not place it in a humid or steamy place
Body fat percentage is obtained by the BIA bioreactance measurement, which is closely related to the following
parameters: body resistance coefficient/height/weight/age/sex. So change any one of these parameters and the fat
percentage changes.
Also please do not measure under the following conditions:
• After strenuous exercise
• After a bath or sauna
• After overeating
• After drinking a lot of water or alcohol
• Cold and fever
The body weight changes daily with the change of eating and drinking water, there are 0.5~2KG of the change
value. Since body fat percentage = fat weight/body weight, fat percentage also fluctuates, as shown in the figure
below. In the morning, before eating and drinking, body fat percentage peaks throughout the day, and in the afternoon
and evening, body fat percentage peaks throughout the day as weight gain and water content increase due to eating
and drinking.
3、Measuring position

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In order to get accurate measurements, pay attention to the measurement posture
• Proper measurement with two feet on each side of the conductive film
• Measure naked as far as possible; When measuring clothes, it also includes the weight of the clothes
• Barefoot and clean the soles of the feet before measuring; Wearing socks or having dust on the soles of your
feet will affect the accuracy of the measurements
• Do not bend your knees or sit while measuring. Do not shake during measurement. Keep your body relaxed.
六、APP Operation Instructions
1. Bluetooth link
a. Turn on the Bluetooth function and click add body fat scale, as shown in Figure 1
b. Wait for the system to scan the surrounding body composition analyzer products, and gently step on the
body composition analyzer until the screen lights up as shown in Figure 2
c. Click Bind Now as shown in Figure 3
d. The interface indicates that binding is underway, and wait for binding to complete. Do not close the body fat
scale as shown in Figure 4
e. WiFi shall be configured after successful binding, as shown in Figure 5
Figure 1 Figure 2 Figure 3

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Figure 4 Figure 5
2. WIFI Configuration
A. Please select 2.4G WIFI for WIFI configuration.
B. In the process of network distribution, the body composition analyzer should be turned on and complete the
measurement.
Distribution network operation is introduced as follows:
Select 2.4GHzWiFi for connection, as shown in Figure 1
Enter the WiFi password, as shown in Figure 2
Wait for the success of distribution network, as shown in Figure 3
Figure 1 Figure 2 Figure 3

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3. Data synchronization
A. Click "History record" on the detail interface, as shown in Figure 1
B. Wait for the device to connect. Start the body composition analyzer and measure body fat weight. When the
measurement is finished, the body weight value is displayed on the screen, and the APP will automatically search for
the body composition analyzer device, as shown in Figure 2
C. Connect successfully, wait for synchronization completion, please keep the body composition analyzer on,
as shown in Figure 3
D. Data synchronization is completed, as shown in Figure 4
E. Check the body weight and body fat measurement results, as shown in Figure 5
Figure 1 Figure 2 Figure 3

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Figure 4 Figure 5
4. Historical data
A. Click the history to view the user's history measurement data, as shown in Figure 1
B. List of historical data, as shown in Figure 2
C. Click [Select] to delete the historical data, as shown in Figure 3
Figure 1 Figure 2 Figure 3

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七、Packing list
Quantity Parts
1 pcs Body Composition Analyzer
4 pcs 4 AAA batteries
1 pcs User Manual
1 pcs Gift box
1 pcs Package support
八、Battery Installation/Replacement
Too low a battery will show LO and the device will go to sleep. The three batteries can be used for three times
a day after installation for four months. The four batteries can be used for six months after installation for three times
a day. If the battery is connected in reverse, the device will not be able to start up but there is no damage.
The battery specification：
• When the product displays "LO", it means that the battery power has been used up and the battery needs to
be replaced.
• Do not use alkaline batteries and manganese batteries at the same time.
• Remove the battery when not in use for a long time.
Battery replacement process
九、Cleaning/disinfection and Care
1. Cleaning and disinfecting
Please pay attention to cleaning and disinfecting after each use because the product is reused. If the product is
dirty, gently wipe the surface of the product with a wet cloth to remove the dirt. Do not use strong cleaning agent, do

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not immerse the product in water, the product is not waterproof.
Disinfection of the product: wipe the surface of the product gently with a cotton swab dipped in a little medical
alcohol (70%), wipe once or twice and use it after the alcohol has completely evaporated.
2. Cleaning and disinfecting environment
Temperature :5℃～40℃ 41℉～104℉
Humidity ：30-90%RH
Atmospheric Pressure ：70kPa-106kPa
3. Storage
Before storing, dry it and keep it out of reach of children.
Remove the battery if you do not use the product for a long time.
Keep the product in a safe and dry place. Avoid sun exposure, extreme heat, cold, or humidity.
Please do not shock the product, such as dropping it to the floor.
Please use the product in strict accordance with the instructions and instructions in this operation guide.
Note: It takes 4 hours for the equipment to return to normal operation after being transferred from the lowest
storage ambient temperature to an ambient temperature of 20 ° C
It takes 4 hours for the equipment to return to normal operation after being transferred from the highest
ambient storage temperature to an ambient temperature of 20 ° C
十、Trouble-shooting
：Returns "FAIL" if the user is trying to network the product:
1. Please check the case of your Wi-Fi password and the way you write special characters.
2. Check your router
2.1 Users are requested to keep mobile phones, body fat scales and routers as close as possible and avoid using
them in a wall environment
2.2 The signal of portable Wi-Fi is generally unstable, so it is not recommended to use it
3. If "FAIL" is returned when data is uploaded through WIFI after the product measurement is completed: please
check whether the network used by the device is in an abnormal or unstable state
：Weight overload
：When the product displays "LO", it means the battery power has been used up. Please replace the
battery in time.
：The device is undergoing an OTA upgrade. Please do not force it to shut down
十一、Standard List
Shenzhen Yolanda Technology Co.,Ltd. declares that theBody Composition Analyzer complies with following
applicable standards:IEC 60601-1,IEC 60601-1-2,IEC 60601-1-11,ISO 10993-1,ISO 10993-5,ISO 10993-10 and

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IEC 62304,ISO1497.
十二、Disposal
Dispose of the device in accordance with the regulations applicable at the place of operation.
Dispose of at public collection point in the EU countries–2002/96/EC WEEE Directive.
If you have any queries,please refer to the local authorities responsible for waste disposal.
NOTES:
Handing of battery and wastes method,please act according to the native law to proceed to handle.
To protect the environment,dispose of empty battery at your retail store or at appropriate collection sites
according to national or local regulations.
十三、EMC
RF STATEMENT/FCC statement
RF STATEMENT
Medical Electrical Equipment needs special precautions regarding EMC and needs to be installed and put into
service according to the EMC information provided in the following section.
Interference may occur in the vicinity of equipment marked with the following symbol .
Portable and mobile RF communication equipment(e.g. cell phones)can affect Medical Electrical Equipment.
The use of accessories and cables other than those specified may result in increased emissions or decreased immunity.
The device 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.
The device 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.
Portable and mobile RF communications equipment should be used no closer to any part of the device, including
cables, the recommended separation distance calculated from the equation applicable to the frequency of the
transmitter.
The device is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. Any other accessories, transducers and cables may result in increased emissions or decreased immunity
and EMC performance.
The device should not be used adjacent to or stacked with other equipment and if adjacent or stacked use is
necessary, it should be observed in order to verify normal operation in the configuration in which it will be used.
Medical Electrical Equipment needs special precautions regarding EMC and needs to be installed and put into
service according to the EMC information provided in the following. Portable and mobile RF communication
equipment(e.g.cell phones)can affect Medical Electrical Equipment. The use of accessories and cables other than
those specified may result in increased emissions or decreased immunity of the unit.
FCC statement

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This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1)This device may not cause harmful interference, and
(2)This device must accept any interference received,including interference that may cause undesired operation.
Attention that changes or modification not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.
Note: This product has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in
a residential installation. This product generates, uses, and can radiate radio frequency energy and,if not installed and
used in accordance with the instructions, may cause harmful interference to radio communications. However, there
is no guarantee that interference will not occur in a particular installation. If this product does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on,the user
is encouraged to try to correct the interference by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
—Consult the dealer or an experienced radio/TV technician for help.
EMC DECLATION
The analyzer needs special precautions regarding EMC and needs to be installed and put into service according
to the below EMC information.
Statement:
The equipment with following ESSENTIAL PERFORMANCE is intended used in Home healthcare
environment and professional healthcare facility environment.
If Essential Performance is lost or degraded due to electromagnetic disturbances,this may result in inaccurate
measurement and lead to mislead patients, please read below important information before to avoid possible
electromagnetic disturbances.
Warning：
Using cell phone or microwave oven, HF surgical equipment, magnetic resonance imaging or other radio radiant
equipment near this product may cause malfunction or lead to loss of essential performance, which means that the
measurement accuracy will be affected.
Use of this equipment adjacent to or stacked with other equipment should be avoided because it could result in
improper operation.If such use is necessary, this equipment and the other equipment should be observed to verify that
they are operating normally.
Portable RF communications equipment(including peripherals such as antenna cables and external
antennas)should be used no closer than 30 cm(12 inches)to any part of the analyzer.Otherwise,degradation of the
performance of this equipment could result.
Use of accessories,transducers other than those specified or provided by the manufacturer of this equipment
could result in increased electromagnetic emissions or decreased electromagnetic immunity of this equipment and
result in improper operation.
Caution:
Security,antitheft,and radiofrequency identification(RFID)devices.Some electromagnetic anti-theft systems and
metal detectors such as those used at entrances or exits of department stores,libraries,and other public places,and
airport security screening devices may affect the analyzer.Additionally,RFID devices,which are often used to read
identification badges,as well as some tag deactivation devices,such as those used at payment counters at stores and
loan desks at libraries,may also affect the analyzer.Please do not use analyzer near these places.If you have to go

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through one of these devices,turn off your analyzer.Before each usage,checking the status of your analyzer to ensure
it can operating normally.
Using short-wave diathermy,microwave diathermy,or therapeutic ultrasound diathermy(all now referred to as
diathermy)and electrocautery devices near this product may cause malfunction or lead to loss of essential
performance,please do not use analyzer near these equipment.Before each usage,observing the device to verify that
they are operating normally.
Guidance and manufacturer’s declaration-electromagnetic emissions
The device is intended for use in the electromagnetic environment specified below.The customer
or the user assure that it is used in such an environment.
Emissions test Complianc
e
Electromagnetic environment-guidance
RF emissions CISPR11
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 emissions CISPR11 Class B The device is suitable for use in all
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
lEC61000-3-2
Not
applicable
Voltage fluctuations/
Ficker emissions
lEC61000-3-3
Not
applicable
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.
Phenomenon
Basic EMC
standard or test
method
Professional healthcare
facility environment
Home healthcare
facility environment
Electrostatic
discharge IEC 61000-4-2 +/-8 kV contact
+/-2 kV,+/-4 kV,+/-8 kV,+/-15 kV air
Radiated RF
EM fields IEC 61000-4-3
3V/m
80MHz-2.7GHz
80%AM at 1kHz or 2Hz
10V/m
80MHz-2.7GHz
80%AM at 1kHz
or 2Hz
Proximity
fields from RF
wireless
communications
equipment
IEC 61000-4-3 See the RF wireless communication equipment
table in"Recommended minimum separation distances".
Rated power
frequency
magnetic fields
IEC 61000-4-8 30A/m;50 Hz or 60Hz
Test specifications for ENCLOSURE PORT IMMUNITY to RF wireless communications
equipment
Test Ban Service Modulatio Maxi Dista Immunit

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frequency
(MHz)
d a)
(M
Hz)
a) n b) mum
power(W)
nce(m) y Test
Level(V/m)
385 380
-390
TETRA
400
Pulse
modulation
b)18Hz
1.8 0.3 27
450 430
-470
GMRS
460,FRS 460
FM
c)±5kHz
deviation 1kHz
sine
2 0.3 28
710 704
-787
LTE
Band 13,17
Pulse
modulation
b)217Hz
0.2 0.3 9
745
780
810
800
-960
GSM800
/900,TETRA
800,iDEN
820,CDMA
850,LTE
Band 5
Pulse
modulation
b)18Hz
2 0.3 28
870
930
1720
170
0-1990
GSM180
0;CDMA
1900;GSM
1900;DECT;L
TE Band
1,3,4,25;UM
TS
Pulse
modulation
b)217Hz
2 0.3 28
1845
1970
2450 240
0-2570
Bluetoot
h,WLAN,802
.11
b/g/n,RFID
2450,LTE
Band 7
Pulse
modulation
b)217Hz
2 0.3 28
5240 510
0-5800
WLAN
802.11 a/n
Pulse
modulation
b)217Hz
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.