Resetting the device to factory settings
| 1. | Take a battery out of the battery compartment. |
| 2. | Press and hold the button/control knob underneath the display. Re-insert the battery at the same time. |
| 3. | Hold the button for a further ten seconds. The LED will light up continuously during this period. |
| 4. | As soon as the LED flashes 5 times, release the button. |
