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Q & A

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Questions and Answers

What is the HK-809 application for OSTAR heart spectrum blood pressure measurement?

The HK-809 application for OSTAR heart spectrum blood pressure measurement is an exclusive application for the owner of the OSTAR HK-809 heart spectrum blood pressure monitor.


The application is developed by CND Technology GmbH and can be executed in all Android samrtphone. With the application, you can use your smartphone to connect and to operate your OSTAR HK-809 heart spectrum blood pressure monitor. In addition, your can retrieve your measurement data in your smartphone for a specific datum or for a period of 7 days or 30 days to have a full control of your blood pressure and the healthy status of your heart.


The HK-809 application for OSTAR heart spectrum blood pressure measurement is free to download in the Google Play for the owner of the OSTAR HK-809 heart spectrum blood pressure monitor.


Learn more about the HK-809 application ...

What is the general application for OSTAR heart spectrum blood pressure measurement?

The general application for OSTAR heart spectrum blood pressure measurement is an exclusive application for the user of the OSTAR heart spectrum blood pressure monitor P2 series and the similar.


The application is developed by CND Technology GmbH and can be executed in all Android samrtphone. Using the application, you can use your smartphone to connect and to operate your OSTAR heart spectrum blood pressure monitor. Furthermore, your can retrieve your measurement data in your smartphone for a specific datum or for a period of 7 days or 30 days to have a full control of your blood pressure and the healthy status of your heart.


The general application for OSTAR heart spectrum blood pressure measurement can be purchased in the Google Play.


Learn more about the application ...

What can I do with the application for OSTAR heart spectrum blood pressure measurement?

You can use the application to connect your smartphone with your OSTAR heart spectrum blood pressure monitor, and to operate the OSTAR equipment to make blood pressure measurement.


You can also store all the measurement data in the application without deleting any old measurement data (there are only a storage capacity of 30 measurement data in the OSTAR heart spectrum blood pressure monitor).


You can retrieve your measurement data at any time for any specific day, or any specific period of 7 days/30 days in the past, to have a full control and overview of your blood pressure and the healthy status of your heart.


You can also backup your measurement data to the user-exclusive CND-OSTAR user cloud database. You can also export your measurement data and, if you wish, share it with your family and/or your doctor.


Learn more about the application ...

Where can I download the HK-809 application for OSTAR heart spectrum blood pressure measurement?

Open the Google Play app in your smartphone. Find the "HK-809 App for OSTAR heart spectrum blood pressure measurement" in the Google Play, then click on the "Install" button to downlaod and install the application.


Open the Google Play ...

Where can I download the general application for OSTAR heart spectrum blood pressure measurement?

Open the Google Play app in your smartphone. Find the "General App for OSTAR heart spectrum blood pressure measurement" in the Google Play, then click on the "Buy" button to purchase the application. Afterward click on the "Install" button to downlaod and install the application.


Open the Google Play ...

Why cannot I set up the HK-809 application for OSTAR heart spectrum blood pressure measurement?

The HK-809 application for OSTAR heart spectrum blood pressure measurement is an exclusive application only for the owner of the OSTAR HK-809 heart spectrum blood presure monitor.


When setting up the application, your will be requested to enter your customer number and the series number of your OSTAR HK-809 heart spectrum blood pressure monitor.


If you do not obtain a customer number, then you are not eligible to use the HK-809 application for OSTAR heart spectrum blood pressure measurement. You should use the general application for OSTAR heart spectrum blood pressure measurement.


Open the Google Play ...

Where can I find my customer number? 

Only the customer of the OSTAR HK-809 heart spectrum blood pressure monitor obtains a customer number.


You receiver a "Customer Service Card" together with your OSTAR HK-809 heart spectrum blood pressure monitor. You will find your customer number in the "Customer Service Card".


If you have any questions, please contact the CND-OSTAR Team.


Contact the CND-OSTAR Team ...

Where can I find the series number of the OSTAR HK-809 heart spectrum blood pressure monitor?

There are two places to find the series number of your OSTAR HK-809 heart spectrum blood pressure monitor:


  • on the side wall of the package, or


  • on the rear side of your OSTAR HK-809 heart spectrum blood pressure monitor.


If you have any questions, please contact the CND-OSTAR Team.


Contact the CND-OSTAR Team ...

Why the application for OSTAR heart spectrum blood pressure measurement requests the permissions of location?

It is the required setting set by Android operation system. Without the permission to find your location, the application cannot find the OSTAR heart spectrum blood pressure monitor in the vicinity of your smartphone via Bluetooth.


If you have any questions, please contact the CND-OSTAR Team.


Contact the CND-OSTAR Team ...

Why the application cannot find the OSTAR heart spectrum blood pressure monitor?

The pairing of your smartphone and your OSTAR heart spectrum blood pressure monitor is conducted by the application for OSTAR heart spectrum blood pressure measurement. Before the application conducts the pairing, your samrphone must find your OSTAR heart spectrum blood pressure monitor via Bluetooth first.


Please check the followings:


  • Has the Bluetooth in your smartphine been turned on?


  • Is the performance of the application normal and you have clicked on the button "Find"?


    • Has the OSTAR heart spectrum blood pressure monitor been turned on?


    • Have you pressed the pairing button on the rear side of the OSTAR heartspectrum blood pressure monitor?


    For some smarphones, when too many Bluetooth devices are paired and/or connected might causes such a problem.


    You can try the followings:


    • Turn off the Bluetooth in your smartphine and turn it on again.


    • Close the application in your smartphone and open it again.


    • Turn off your smartphone and turn it on again.


    • Contact the manufacturer of your smartphone for technical support.


    If you have any questions, please contact the CND-OSTAR Team.


    Contact the CND-OSTAR Team ...

    Why the application displayed the "Connect equipment" dialog box?

    Every time when you close the application for OSTAR heart spectrum blood pressure measurement in your smartphone, the connection of your smartphone and your OSTAR heart spectrum blood pressure monitor will also be disconnected.


    The same situation will also happen when you turn off you OSTAR heart spectrum blood pressure monitor while the application is still opened. The connection between your smartphone and your OSTAR heart spectrum blood pressure monitor is disconnected immediately.


    Next time when you open the application for OSTAR heart spectrum blood pressure measurement in your smartphone to make a blood pressure measurement, the dialog window will be displayed to remind you that the connection of your smartphone and your OSTAR equipment need to be rebuilt.


    • Please click on the option "Connect equipment", the application for OSTAR heart spectrum blood pressure measurement will try again to connect the paired OSTAR heart spectrm blood pressure monitor.


    • If the retry is failed again, the application will open the page "Conneting BP monitor", you can click on the button "Connect" to try connecting again or you can click on the button "Unpair" to delete the existing pairing information and implement the "Find-Pair-Connect" procedure to rebuild the connection of your smartphone and your OSTAR heartspectrum blood pressure monitor.

    Why my smartphone and my OSTAR heart spectrum blood pressure monitor cannot be connected by the application?

    Please check if any of the following situations happened:


    • The pairing button on the rear side of the OSTAR blood pressure monitor has been pressed accidentally,


    • Your OSTAR blood pressure monitor has been used by another smartphone to conduct a blood pressure measurement,


    • You have used another OSTAR blood pressure monitor to conduct a blood pressure measurement.


    When the pairing button on the rear side of the OSTAR heart spectrum blood pressure monitor is pressed, the OSTAR equipment will generate and broadcast a new pairing information. Therefore the pairing information stored in your smartphone will be no longer valid.


    It is the same, when your smartphone was used to connect another OSTAR heart spectrum blood pressure monitor to conduct a blood pressure measurement. After your smartphone was paired and connected with another OSTAR heart spectrum blood pressure monitor, the pairing information stored in your smartphone was changed accordingly.


    You can try the folloings on the page "Connecting BP monitor" to solve the problem:


    • Turn off the Bluetooth in your smartphine and turn it on again. Then press the "Connect" button again.


    • Close the application in your smartphone and open the application again. then click on the "Connect" button again.


    • Press the "Unpair" button to remove the old pairing information stored in the application. Then follow the "Find-Pair-Connect" procedures to find your OSTAR heart spectrum blood pressure monitor, to pair your smartphone with the OSTAR equipment found and to connect the application with your OSTAR equipemnt again.


    If you have any questions, please contact the CND-OSTAR Team.


    Contact the CND-OSTAR Team ...

    Can I use different OSTAR heart spectrum blood pressure monitors to measure blood pressure?

    Yes. The users of the HK-809 application for OSTAR heart spectrum blood pressure measurement can use any OSTAR HK-809 heart spectrum blood pressure monitor to measure blood pressure.


    If you, the user of the HK-809 application for OSTAR heart spectrum blood pressure measurement, have registered a account in the CND-OSTAR user cloud database, and have synchronised your measurement data to the cloud database, then you can also use any OSTAR P2 series heart spectrum blood pressure monitors or alike modles to measure blood pressure.


    The users of the general application for OSTAR heart spectrum blood pressure measurement can use any OSTAR heart spectrum blood pressure monitor to measure blood pressure (HK-809, P2 series and alike models).

    How to use different OSTAR heart spectrum blood pressure monitor to measure blood pressure?

    First you need to pair your smartphone with the OSTAR heart spectrum blood pressure monitor you are going to use for measuring blood pressure..


    To pair your smartphine with another OSTAR equipment, you need to do the followings:


    • Open the application on your smartphone, on "Conneting BP Monitor" page, click on the button "Unpair" to remove the old paring information stored in the application.


    • Turn on the OSTAR heart spectrum blood pressure monitor you will use to measure blood pressure, and press on the pairing button on the rear side of the OSTAR equipment to make this OSTAR equipment detectable for your smartphone.


    • Follow the "Find-Pair-Connect" procedures to find the OSTAR heart spectrum blood pressure monitor, to pair your smartphone with the OSTAR equipment found and to connect the application with the OSTAR equipemnt. After the connection is completed, the application is ready to make a measurement.

    Why the application displayed the "Series number error" dialog box?

    During the setup of the application for OSTAR heart spectrum blood pressure measurement, you was asked to enter the series number of your OSTAR equipment. Then this information was saved by the application.


    Every time you completed a heart spectrum blood pressure measurement with the application, all the measurement data will be transfered to the application together with the series number of the OSTAR equipment you used.


    When the application displayed the "Series number error" dialog box, it indicates the following possibilities:


    • An incorrect series number of the OSTAR heart spectrum blood pressure monitor has been entered when the equipment was registered, or


    • You was using an OSTAR heart spectrum blood pressure monitor different from the registered one to measure the blood pressure.


    Please click on the option "Understand & continue", the application will update the series number of your OSTAR equipment.


    If you have any questions, please contact the CND-OSTAR Team.


    Contact the CND-OSTAR Team ...

    Why there are four time segment buttons displayed on the overview page of measurement data? What are these time segment buttons for?

    The blood pressure measured at different time would not be the same, because in reality, the blood pressure are varied in accordance with the physical conditions and external influentcial factors.


    It is commonly suggested that the users, who use the OSTAR heart spectrum blood pressure monitor to control blood pressure and heathy status of their heart, measure their blood pressure around the same time every day or in a certain period of time according to the suggestion of your doctor.


    When the user retrieve the measurement data for a period of 7day or 30 days, the application will list all the measurement data within this period on the list. The application then provide the function to further categorise these measurement data into 4 time segments, which are 6 - 10 o'clock (morning), 10 - 18 o'clock (day time), 18 - 22 o'clock (evening) and 22 - 6 o'clock the next day (night time) to assist the user with better overview and controll over the blood pressure and the healthy status of the heart.


    To view the measurement data in a certain time segment, just click on the corresponding time segment button. After the button is clicked, only those measurement data in this time segment will be displayed in the list. Click the same button again, all the measurement data will be displayed again.