Hanna Instruments HI 84442 - Manual (Page 12)

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Options: °C, °F.
Press the function key in order to change the
temperature unit.
Temperature unit
Options: 0 to 8.
Press Modify to access the backlight level.
Backlight
Use the ARROW keys or / in order to
increase/decrease the value.
Press Accept to confirm the value or ESC to return
to the setup menu.
Option: 0 to 20.
This option is used to set the display’s contrast.
Press Modify to change the display’s contrast.
Use the ARROW keys or / in order to
increase/decrease the displayed constrast.
Press Accept to confirm or ESC to return to the
setup menu.
Contrast