Resetting the device to factory settings

1. Unplug the connector power pack from the socket.
2. Now press and hold the left button beneath the display.
3. While pressing and holding the button, plug the connector power pack back into the socket.
4. Press and hold the button until "RESET" appears on the display. The LED will light up continuously during this period.
5. Release the button and wait until the 8-digit PIN appears on the display.