MRC PHT-3109, Руководство по эксплуатации

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6. SYSTEM RESET
Power on the meter, use the two fingers to press " Set
Button " ( 3-4, Fig. 1 ) and " RH/Temp. Button " ( 3-7,
Fig. 1 ) continuously more than 5 seconds until the
Display show the text " rSt ", release the buttons. After
" rSt " text flashing 2 times will return to the normal
screen. The meter system will be reset, all the
calibration data will be cleared, the meter's internal
function will return the default value.
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