Checkline LM6 - Manual (Page 11)

– 10 –
4. Press the third button as long as the black bar stands
on the first digit of the serial number. After a waiting
time of a few seconds the device accepts the entered
digit. Now the other 3 digits have to be entered.
When the 4-digit number has been entered correctly
(see picture), press the button to confirm.
5. The request Reinitialize? will appear at the display.
Hold the humimeter LM6 in one hand and make sure
that nothing stands behind the measuring field (black
plate).
6. Now press the second button ( ✔ ) with one finger. The
calibration procedure will take a few seconds. During
that time, the instrument has to be held up in the air
and the measuring field must NOT be touched.
7. The device is ready when the shown picture on the
right disappears automatically.