User's Manual
Electronic Sphygmomanometer / CONTEC08C 
Contec Medical Systems Co., Ltd. 
Address:NO.112 Qinhuang West Street, Economic & Technical Development Zone, 
Qinhuangdao,Hebei Province, PEOPLE’S REPUBLIC OF CHINA 
Tel: +86-335-8015430              Fax: +86-335-8015588 
Technical support:+86-335-8015431 
E-mail: cms@contecmed.com.cn 
Website: http://www.contecmed.com 
EC REPRESENTATIVE 
Shanghai International Holding Corp. GmbH (Europe) 
Address: Eiffestrasse 80, 20537, Hamburg, Germany   
Tel:  +49-40-2513175   Fax:  +49-40-255726 
E-mail: shholding@hotmail.com 
CMS2.782.183(LED)(CE.USA)ESS/1.3        1.4.01.06.348        2022.07 
Foreword                                                   
Please  read  the  User  Manual  carefully  before  using  this  product.  The  User  Manual  which  describes  the 
operating procedures should be followed strictly. This manual detailed introduce the steps must be noted when using 
the product, operation which may result in abnormal, the risk may cause personal injury and product damage and other 
contents,  refer  to  the  chapters  for  details.  Any anomalies  or personal  injury and  device  damage  arising  from use, 
maintain,  store  do  not  follow  requirements  of  the  User  Manual,  Our  company  is  not  responsible  for  the  safety, 
reliability and performance guarantees! The manufacturer’s warranty service does not cover such faults! 
Our company has a factory record and user profile for each device, users enjoy free maintenance services for one year 
from the date of purchase. In  order to facilitate us to  provide you  with a  comprehensive and  efficient  maintenance 
service, please be sure to return the warranty card when you need repair service. 
Note: Please read the User Manual carefully before using this product. 
Described in this User Manual is in accordance with practical situation of the product. In case of modifications and 
software upgrades, the information contained in this document is subject to change without notice. 
The warning items 
Before using this product, you should consider the safety and efficacy of the following described: 
  Described each measurement results combined with clinical symptoms by qualified doctors. 
  The  reliability  and  operation  of  using  this  product  whether  meets  the  operation  of  this  manual  relate  to  the 
maintenance instructions. 
  The intended operator of this product may be the patient. 
  Do not perform maintenance and service while the device is in use. 
Warning: Replace  accessories  which  not provided  by our company  may  lead to  the occurrence of errors. 
Replace  adapters,  cuffs  at  will  may  result  in  wrong  measurement  results.  Without  our  company  or  other 
approved maintenance organizations trained service personnel should not try to maintain the product. 
Responsibility of operator 
  The  operator  must  carefully  read  the  User  Manual  before  use  this  product,  and  strictly  follow  the  operating 
procedure of the User Manual. 
  Fully consider the security requirements during product design, but the operator should not ignore the observation 
for the patient and the state of machine. 
  The operator has the responsibility to provide the use condition of the product to our company. 
Responsibility for our company 
  Our company have the responsibility to provide qualified product which conform to company  standard of  this 
product 
  Our company will provide the circuit diagram, calibration method and other information at the request of the user 
to help the appropriate and qualified technicians to repair those parts designated by our company. 
  Our company have the responsibility to complete product maintenance according to the contract. 
  Our company have the responsibility to respond the requirements of user in time. 
  In the following case, our company is responsible for the impact on the safety, reliability and performance of the 
device: 
Assembly, addition, debugging, modification or repair are carried out by personnel approved by our company. 
The  electrical  facilities  in  the  room  are  in  compliance  with  the  relevant  requirements  and  the  device  is  used  in 
accordance with the User Manual. 
The User Manual is written by our company. All rights reserved. 
Chapter1 Functions and Purpose 
1.1 Main Functions 
  Measure blood pressure and store the measurement results. 
  Data storage function, up to 199 records can be stored. 
  With data review interface which is convenient for reviewing blood pressure parameter. 
  The screen will prompt message when the power is low. 
  When the measurement result can not be obtained due to some factors during the measurement, the device will 
display the corresponding error information. 
  Measurement units: mmHg and kPa, which can be switched by the button. 
  With automatic shutdown function, if there is no operation, the device will automatically turn off. 
  Vo ice broadcast(optional for devices with vioce function) 
  The data stored can be uploaded to master device by Bluetooth(optional for devices with Bluetooth function) 
1.2 Purpose 
The device apply to measure the non-invasive blood pressure of human. Record parameter value of blood pressure to 
provide the reference for the health care professional.The device applies measurement Blood Pressure (BP) and Pulse 
of adult and adolescent . 
Chapter2 Safety Precautions: 
In order to use it correctly, please read the "Safety Precautions" carefully before using it. 
Operators do not need professional training, but should use this product after fully understanding the requirements in this 
manual. 
To prevent users from suffering damage or loss due to improper use, please refer to "Safety Precautions" and use this 
product properly. 
For safety reasons, be sure to comply with safety precautions. 
  Note   
If not use correctly, it exists the possibility of damage for personnel and goods. 
Good damage means the damage of house, property, domestic animal and pet. 
  Contraindication   
No. 
  Warning   
  You must not perform NIBP measurements on patients with sickle-cell disease or under any condition which the 
skin is damaged or expected to be damaged. 
  For  patients with  severe disturbances of  blood coagulation, whether  automatically  measure  the  blood  pressure 
should be based on the clinical evaluation, because limb friction with the cuff may cause the risk of hematoma. 
  For severe blood circulation disorder or arrhythmia patients, please use the device under the guidance of a doctor. If 
the arm is squeezed during measurement, it may cause acute internal hemorrhage or inaccurate measurement results. 
Measurement Limitations 
To different patient conditions, the oscillometric measurement has certain limitations. The measurement is in search of regular 
arterial  pressure  pulse.  In  those  circumstances  when  the  patient's  condition  makes  it  difficult  to  detect, the  measurement 
becomes unreliable and measuring time increases. The user should be aware that the following conditions could interfere with 
the measurement, making the measurement unreliable or longer to derive. In some cases, the patient's condition will make a 
measurement impossible. 
Patient Movement 
Measurements will be unreliable or can not perform if the patient is moving, shivering or having convulsions. These motions 
may interfere with the detection of the arterial pressure pulses. In addition, the measurement time will be prolonged. 
Cardiac Arrhythmia's 
Measurements  will  be unreliable  and  may  not  be  possible  if  the  patient's cardiac arrhythmia  has  caused  an irregular 
heartbeat. The measuring time thus will be prolonged. 
Heart-lung Machine 
Measurements will not be possible if the patient is connected to a heart-lung machine. 
Pressure Changes 
Measurements  will be unreliable and may not  be  possible  if the  patient's  blood  pressure  is changing  rapidly over the 
period of time during which the arterial pressure pulses are being analyzed to obtain the measurement. 
Severe Shock 
If  the  patient  is  in  severe  shock  or  hypothermia,  measurements  will  be  unreliable  since  reduced  blood  flow  to  the 
peripheries will cause reduced pulsation of the arteries. 
Heart Rate Extremes 
Measurements can not be made at a heart rate of less than 40 bpm and greater than 240 bpm. 
Round Patient 
The thick fat layer of body will reduce the measurement accuracy, because the fat that come from the shock of arteries 
can not access the cuffs due to the damping 
  Warning   
Self-diagnosis and treatment using measured results may be dangerous. Follow the instructions of your physician. 
Please hand measurement results to the doctor who knows your health and accept diagnosis. 
For Infant and the person who can't express oneself, please use the device under the guidance of a doctor. 
Otherwise it may cause accident or dissension. 
Please do not use for any other purpose except BP measurement. 
Otherwise it may cause accident or holdback 
Please use special cuff. 
Otherwise it is possible that measurement result is incorrect. 
Please do not keep the cuff in the over-inflated state for a long time. 
Otherwise it may cause risk. 
Do not use the device in the case of there are flammable anesthetic gasses mixing with the air or nitrous oxide. 
Otherwise it may cause risk. 
If liquid splashes on the device or accessories, especially when liquids may enter the pipe or device, stop using and 
contact the service department. 
Otherwise it may cause risk. 
Dispose  of  the  packaging  material,  observing  the  applicable  waste  control  regulations  and  keeping  it  out  of 
children's reach. 
Otherwise it may cause harm to the environment or children. 
Please use approved  accessories  for the device and check  that the device and accessories are working properly  and 
safely before use. 
Otherwise the measurement result may be inaccurate or an accident may occur. 
When the device is accidentally damp, it should be placed in a dry and ventilated place for a period of time to dissipate 
moisture. 
Otherwise the device may be damaged due to moisture. 
Do not store and transport the device outside the specified environment. 
Otherwise it may cause measurement error. 
It is recommended that you check if there is any damage on the device or the accessories regularly, if you find any 
damage, stop using it, and contact the biomedical engineer of the hospital or our Customer Service immediately. 
Do not disassemble, repair and modify the device without permission.   
Otherwise it cannot be accurately measured. 
This device can not be used on mobile transport platforms. 
Otherwise it may cause measurement error. 
This device can not be used on a tilted tabletop. 
Otherwise there is a risk of falling. 
Dispose  of  packaging  materials,  waste  batteries  and  end-of-life  products  in  accordance  with  local  laws  and 
regulations. The end-of-life products and materials are properly disposed of by the user in accordance with the 
authority’s decree. 
Replace accessories which not provided by our company may lead to the occurrence of errors. 
Without our company or other approved maintenance organizations trained service personnel should not try to 
maintain the product. 
This device can only be used for one test object at a time. 
If the small parts on the device are inhaled or swallowed, please consult a doctor promptly. 
The device and accessories are processed with allergenic materials. If you are allergic to it , stop using this product. 
After pressing the power button, if the device has display fault such as white screen, blurred screen or no display 
content, please contact our company. 
The  device  shall  comply  with  the  standard  IEC  80601-2-30:Particular  requirements  for  basic  safety  and  essential 
performance of automated non-invasive sphygmomanometers. 
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. 
Any Changes or  modifications not  expressly  approved  by  the  party responsible for  compliance  could  void  the  user's 
authority to operate the equipment. 
  Note   
This equipment 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 equipment 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 equipment  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. 
The device has been evaluated to meet general RF exposure requirement.The device can be used in portable/mobile 
exposure condition without restriction 
2.1 Operation for power adapter(Separate Sale) 
  Note   
The device can be powered by a power adapter that is a part of the medical electrical system.Be sure to use the 
dedicated medical grade power adapter of this device. 
Otherwise it may cause trouble 
Dedicated power adapter must use AC 100 V~240 V 
Otherwise it may cause fire or electric shock. 
When there is breakage of dedicated power adapter plug or wire, please do not use it. 
Otherwise it may cause fire or electric shock. 
Please do not plug or unplug the adapter on the socket with wet hands. 
Otherwise it may cause electric shock or injury. 
When  using  the power adapter to connect  with  the  power  socket,  make  sure  the power socket  is conveniently 
accessible, in order to timely disconnect from the power when emergency. 
2.2 Operation for Battery 
    Note   
Please use 4 "AA" size manganese or alkaline batteries, do not use batteries of other types. 
Otherwise it may cause fire. 
Do not mix old and new batteries and batteries of different types 
Otherwise it may cause battery leakage, heat, rupture, and damage to Electronic Sphygmomanometer. 
Please don't put wrong the positive and negative of battery. When the batteries power exhausts, replace with four 
new batteries at the same time. 
Please take out the batteries when you do not use the device for a long time(3 months or more). 
Otherwise it may cause battery leakage, heat, rupture, and damage to Electronic Sphygmomanometer. 
If electrolyte of the batteries immodestly get in your eyes, immediately rinse with plenty of clean water. 
It will cause blindness or other hazards, should immediately go to the nearest hospital for treatment. 
If electrolyte of the batteries immodestly glues on the skin or the clothes, immediately rinse with plenty of clean 
water. 
Otherwise it may hurt the skin. 
Advice 
Do not strike or drop the device; 
Do not inflate before the cuff wraps around the arm; 
Do not inflect the cuff and the air tube forcibly. 
Chapter3 Main Unit 
All products are in the box. Open the box and confirm whether the product is whole. 
3.1 Display 
:Irregular pulse  icon.Irregular  pulse  icon  is displayed in  the measurement  results  if the pulse  internal is  irregular 
during measuring,   
:Movement  icon.The “Movement”  icon  appears  if patient  moves and continue measuring may lead to inaccurate 
measurement. 
:Cuff tied icon.The icon appears if Cuff tied properly.The icon disappears if not 
:Memory Function icon. 
:Bluetooth icon.The Bluetooth is enabled(optional for devices with Bluetooth function) 
:The icon  lights  up if  the  device  time  is  not  synced,  and the  measured  data  cannot  be uploaded  to the terminal 
equipment  via the Bluetooth. After syncing the time by Bluetooth connection of the device, the icon goes off, and the 
measured data can be uploaded.(optional for devices with Bluetooth function) 
  /  :Voice icon.The voice function is enabled or not(optional for devices with Voice function) 
3.2Accessories 
 Cuff                                     User Manual AC Adapter 
Cuff 
Specification: limb circumference 22-32 cm (middle part of upper arm ), please choice suited cuff when measuring other.                                                                                                   
Separate Sale: 
AC Adapter 
Input: voltage: AC 100 V~240 V   frequency: 50 Hz/60 Hz   Rated current: AC 150 mA 
Output:DC5.0 V±0.2 V    1.0 A 
Note: 
◎ The cuff is a consumable. Calculate by measuring 6 times a day(3 times each morning and evening), the service life of 
the cuff is about 1 year.(using our experimental conditions); 
◎ In order to correctly measure blood pressure, please replace the cuff in time; 
◎ If the cuff leaks, please contact our company to buy a new one. The cuff purchased separately does not include the 
airway tube plug. When replacing, please do not throw the airway tube plug away, install it on the new cuff. 
  Note   
When the product and accessories  described in this  manual are  about to exceed the  period  of use, they must be  disposed 
according to relevant product handling specification. If you want to know more information, please contact our company or 
representative organization. 
Chapter4 External Interfaces 
  Note   
When removing NIBP cuff, please take plug at the front of the windpipe to pull out. 
①Cuff socket( is cuff identifier)                                                 
Left side 
②Power adapter socket( is power socket identifier)                                           
Back side 
  Note   
All  analog and digital equipment connected to this device must be certified to IEC standards(such  as IEC60950: 
Information technology equipment-Safety and IEC60601-1: Medical electrical equipment-Safety), and all equipment 
should be connected to in accordance with the requirement of the valid version of the IEC60601-1-1 system standard. 
The person connecting the additional equipment to the signal input and output port is responsible for whether the 
system complies with the IEC60601-1 standard. 
Chapter5 Battery/AC Adapter Installation 
The production can use battery and AC adapter. 
5.1 Battery Installation 
① ②                                        ③ 
①  Demount the battery cover in the direction of the arrow. 
②  Install "AA" batteries according to    polarities. 
③  Slide to close the battery cover. 
Icon “ ”: the batteries power will exhaust. Replace with four new batteries  (the same sort)  at the same time. Test 
while low power may cause data deviation and other problems. 
Turn the unit off before replacing the batteries. 
  Note   
When the battery reaches the end of its life, or if the battery is found to have odor, deformation, discoloration or 
distortion, stop using the battery and dispose of the used battery in accordance with local regulations, otherwise 
it will cause environmental pollution. 
5.2 Usage of power adapter 
1.Connect the sphygmomanometer and the power adapter. Plug the power adapter plug into the power adapter socket 
on the back of the device 
2.Please insert the power plug of the adapter into the AC 100 V~240 V socket. 
  Note   
The device can be disconnected from the power supply network by unplugging the adapter plug. 
When cut off the power supply, first cut off the connection of power socket and the regulated power supply, then 
cut off the connection of regulated power supply and the sphygmomanometer. 
Please be sure to use dedicated medical grade power adapter. 
  Note   
When regulated  power  supply  and  batteries  are  both  used  at  the  same time,  the  battery power  will  not  be 
consumed. 
Switch regulated power supply and battery as power supply when the device is off, otherwise, the device may 
shutdown due to power failure. 
The device can be used normally after it is turned on ,without waiting for the device to be prepared. 
Chapter6 Button Functions 
6.1 Description for button operation   
All the operations to the Electronic Sphygmomanometer are through buttons. The names of the buttons are above them. 
They are: 
  Left button is “M” button, under “OFF” state, press this button to enter the review interface (refer to Chapter 
8 for details.). 
  Right button is  “START/STOP” button, under “OFF” state, press this  button  to  enter  measurement mode, 
inflate the cuff to measure blood pressure, press this button again to turn off the device. 
6.2 Units setting   
Under “OFF” state, press “M” button and “START/STOP” button simultaneously for 5 s to enter the setting interface, 
the default unit in this interface is “mmHg”; short press “M” button to switch the unit between “mmHg” and “kPa”. 
6.3 Volume setting (optional for devices with voice function) 
  Press “START/STOP” button  again in  the unit  setting interface to enter  the volume setting interface. Press “M” 
button to change the volume, the maximum volume is 4, and the minimum is 0 (silence). 
  After completing the setting, repeatedly press the “START/STOP” button to turn the device off. 
  Note   
  The default unit of the device when leaving factory is mmHg. 
  In the  volume setting  interface, press “START/STOP” button to enter the factory setting interface, in  which the 
“CAL” is the static pressure interface, and the “FAC” is the aging interface, which does not require user to operate. If 
you want to end the interface, press the “START/STOP” button twice to turn the device off. 
Chapter7 The Usage Method of Sphygmomanometer 
7.1 Accurate Measurement Way 
Measurement in quiet and relaxing state. 
1.  Adopt a comfortable sitting position, use back and arms to support the body. 
2.  Place your elbow on a table, the palm faces up and the body is relaxed. 
3.  The cuff is level with your heart. 
4.  Feet flat on the floor, and do not cross your legs. 
  Advice     
Try to measure your blood pressure at the same time each day with the same arm and the same pose for 
consistency. 
The high and low location of cuff will cause changes in measure results. 
Do not touch the sphygmomanometer, cuff and windpipe during measure.     
Measurements should be taken in a quiet place and the body relax. 
Remain still 4~5 minutes before measurement. 
Do not talk and movement during the measurement. Relax the body, do not let the muscle activity. 
Wait 4~5 minutes between measurements. 
Do not use precision instrument near the Sphygmomanometer. 
  Warning   
When repeatedly measuring, the accurate blood pressure value may not be measured due to congestion in the arm. 
Please measure after the blood flow is smooth. 
Repeated  measurement  for  a  long  period  of  time,  limbs  rubbing  with  the  cuff  may  be  accompanied  by  purpura, 
ischemia and nerve damage. When measurement a patient, it is necessary to frequently check the color, warmth and 
sensitivity of the distal of the limb. Once any abnormalities are observed, place the cuff in another position or stop the 
blood pressure measurement immediately. 
Please use the device at an environment of suitable temperature and humidity    otherwise it will cause measurement 
error. 
Do not twist or wrap the airway tube. It can cause constant pressure in the cuff which can block blood flow and cause 
serious damage to the patient. 
Do not use the cuff on the injured area, which will cause more serious damage to the area. 



