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Disconnecting the AC adapter from the monitor: 1. Turn the unit off by pressing the START button. 2. Disconnect the plug from the jack of the monitor quickly. 3. Gently remove the AC adapter from the outlet. NOTE: If monitor has batteries and an AC adapter connected, the measurements stored in memory will be lost if AC adapter is unplugged from the wall first. To ensure that measurements remain in memory, make sure the unit is off and that the jack plugged into the monitor is removed quickly bef