Turning On The Display Backlight; The Range Button - UNI-T UT803 Operating Manual

Turning on the Display Backlight

Warning
In order to avoid the hazard arising from mistaken
readings in insufficient light or poor vision, please
use Display Backlight function.
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Press LIGHT button to turn the Display Backlight on.
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Press LIGHT button again to turn the Display Backlight
off, otherwise it will stay on continuously.
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When using the AC power to turn the Meter on, the
Display Backlight always stays on.
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Model UT803: OPERATING MANUAL

The RANGE Button

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Press RANGE to enter the manual ranging mode;
the Meter beeps.
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Press and hold RANGE for over 1 second to return
to autoranging; the Meter beeps.