NEC MD211G3 Installation & Maintenance Manual page 31

5. Input the value measured at 1, and press SELECT (Figure AS.3).
When not having measured, press SELECT without changing the value.
6. After the CALIBRATION SUCCEEDED message appears (Figure AS.4), press SELECT.
You can set DATE and TIME by using control keys, and press SELECT.
7. To end the calibration mode, press EXIT.
Figure AS.3
Figure AS.5
English-29
Figure AS.4
Illuminance meter