3. Make sure electrodes are not dirty. Dirt, sweat, or other debris on the sensors can interfere with the ECG readings. Clean the sensors and the area around them regularly with a soft, dry cloth.<br> | 3. Make sure electrodes are not dirty. Dirt, sweat, or other debris on the sensors can interfere with the ECG readings. Clean the sensors and the area around them regularly with a soft, dry cloth.<br> |