The blinking heart symbol indicates that the unit is slowly decreasing the pressure in the wrist cuff. This is when the unit is finding your Diastolic blood pressure. This is a normal symbol on most automatic blood pressure monitors. When a nurse or doctor uses a manual blood pressure cuff and listens to the blood flow, they will record the systolic pressure when they first hear the heart beat. Then they record the diastolic measurement when they can no longer hear the heart beat.
The manual for the KS-7902 is available here:
http://pharmasupply.com/wordpress/pdf/wristman .
I hope this helps.
Cindy Wells
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