A blood pressure monitor measures two pressures: systolic, and diastolic. Systolic pressure is higher, occurring when your heart beats and pushes blood through the arteries, and diastolic pressure is measured when your heart is resting and filling with blood.
Install the batteries provided with the device and plug the connector on the cuff tube into the device.
Place the cuff on your arm and press the Start/Stop button to begin the measurement. Once done, the monitor will show the following on the display.