What to do if Dr.Frei Blood Pressure Monitor shows E2 E4 error due to hand shaking?
- EErin GrayAug 1, 2025
If the Dr.Frei Blood Pressure Monitor displays 'E2' or 'E4' and indicates hand shaking during measurement, it means that there was hand or body shaking while measurement. To resolve this, keep a static position and measure again.