Uniks D3 Manual Del Usuario página 6

Buttons:
Full screen display ：
Introduction
Install / replace batteries:
Open the battery compartment cover, insert the battery correctly into the battery compartment and cover the battery compartment cover. When
the battery charge is too low, the icon representing the battery charge is displayed on the screen. Replace the battery as soon as possible. Carbon
or alkaline batteries can be used normally and the measurement times of carbon batteries will be relatively short.
•
Remove the battery when not in use for a long time.
•
The lithium battery can be turned on directly for use. If the voltage is too low, promptly charge the instrument.
•
When the battery level indicator appears, it indicates that the battery level is low and the battery needs to be replaced.