To do a hard reset of your Lumo Lift sensor by completing the following steps:
1) Place your Lumo Lift in the charging dock (make sure it is plugged into a power source)
2) Press down on the button for 10 seconds then release while Lumo Lift is in the charger. You'll see a series of flashing lights.
Please note, you will lose previous data if you do a hard reset on your sensor without backing up your data beforehand.