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suitable range. Press it for more than 2
seconds to get back to AUTO mode.
3) HOLD: press this button to hold the
current measured value on LCD. Press it
again to exit the hold model.
NOTE:
After AUTO off, press the HOLD
button to cancel the auto off function.
4) REL: press this button to make the
current displayed value as reference
value, meanwhile the LCD displays as
zero. Measuring values heareafter will
automatically deduct the reference value,
unless pressing the REL button again to
exit refrence value test function.
5) AUTO OFF: during measurement, if
there is no operation with the buttons and
switch, the unit will automaticaly turns off
to save energy. To exit AUTO OFF function
(hibernation
mode),
please
press
HOLD
button. Under AUTO OFF
mode, press any button
or turn the switch, the unit
will get into "AUto ON"
(working mode).
Figure 3.
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