Making Measurements; Setting Up The Sleep Mode, Contrast, Beep - UNI-T UT81C Operating Manual

Model UT81C: OPERATING MANUAL
Introduction
Chapter 3 explains how to make measurements.
You could turn the Meter off by turning to OFF position
or set up the sleep mode from 1-30 minutes. Please
must ensure the Meter is not under sleep mode if you
turn the Meter on but without display.
To avoid false readings, which could lead to possible
electric shock or personal injury, replace the battery as
soon as the battery indicator " " appears.
Making Measurement
Based on the working environment to set up sleep
mode, contrast, beep
Press Set button to set the auto power off, display
backlight, contrast and beep
Auto off Bk Light
F1 F2
F1: Set auto power off time
Auto off 15
F1 F2 F3
The time level is from OFF, 1 to 30 minutes. Press F4
to confirm, save and return. Press functional button to
exit and the setting remains unchanged.
Chapter 3
Contrast Beep
F3 F4
ENTER
F4
15