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displayed value will not update until a higher sound level value is
detected. However, the analog bar graph will continue to reflect the
instantaneous readings. To capture minimum sound levels, press
the MAX/MIN button again, the MIN indicator will appear on the
LCD. Now, only the minimum sound level will be captured and
displayed. Press the button one more time to exit the MAX/MIN
measurement mode.
2.4 Data Hold
Press the HOLD button once to freeze the current reading. Press it
again to return to normal measurement mode.
2.5 Backlight
Press the button to turn the backlight on and off.