Frequently Asked Questions


Can this be used with a pacemaker?

We recommend that patients with pacemakers consult their doctor about their measurements.

Will the unit tell me if my heart is currently in atrial fibrillation?

The Portable ECG Monitor is able to detect arrhythmias like atrial fibrillation and atrial flutter by AI-ECG analysis system via the App.

Will this work with phone APP? How to use with my smartphone?

Yes. The DuoEK™ Portable ECG Monitor can work with iOS 9.0 or above, iPhone 4s / iPad 3 or above, also can work with Android 5.0 or above.

The APP name is “ViHealth”. Please install the latest APP “ViHealth” on your smartphone(support BLE Bluetooth) from App Store (iOS) or Google Play (Android). Please operate as below:


1) Switch on the device Bluetooth in Setting->Bluetooth.

2) Switch on the Phone Bluetooth.

3) Run the APP, add the device in the APP. (don’t pair the device in the phone Setting menu, only in the APP)

4) The data will be downloaded automatically

How to active my DuoEK?

Activate the device before the first use by charging the device. 

Note: Device will not work without activation. 

Can DuoEK work with computer?

No, it can't.

Is there any fee for the App?

No, the app is totally free.

What is the DouEK built-in storage?

10 sessions, if EKG length is less than 1 minute; 1 session if EKG lengh is 15 minutes.

How long can I record my ECG?

This device can record ECG for up to 15 minutes. Measurement will be ended automatically after 15 minutes. And data will be saved in device.

What does the measurement results mean?

Regular heart beat:

The recorded ECG is in a common regularpattern. 

Irregular heart beat:

The recorded ECG is in an erratic pattern. Itmay be caused by overload of heart or otherconditions. If you have measured withinverse direction, please try again withcorrect direction. 

Poor signal:

Moisten skin; try other method (Lead II, chest lead or Lead I); Try to keep still during test.

Does this device require any wires or patches?

No, the DuoEK™ Portable ECG Monitor doesn't require any wires, patches, or gels.

How many ways of measurement does this device support?

This device supports 4 ways of measurement as below:

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