UNI-T UT81B

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Model UT81B: OPERATING MANUAL
F2: Set the Display Backlight
BK Light 15 ENTER
F1 F2 F3 F4
The brightness level from 0 to 31. Press F4 to
confirm, save and return. Press functional buttons
to exit, the setting is kept, but will not save. The
setting will be lost after power off.
F3: Set the LCD contrast
Contrast 15 ENTER
F1 F2 F3 F4
The contrast level from 0 to 31. Press F4 to confirm,
save and return. Press functional buttons to exit,
the setting is kept, but will not save. The setting will
be lost after power off.
F4: Set the beeps features, it can only be used under
resistance, diode and continuity measurement.
Beep ON OFF ENTER
F1 F2 F3 F4
F2 : to turn the beep on
F3 : to turn the beep off
F4 : to confirm , save and return
Press functional buttons to exit, the setting is kept, but
will not save. The setting will be lost after power off.