General Tools and Instruments DLAF8000C - Manual (Page 10)

2) With the REC symbol on the display :
(a) Press the " Max./Min. Button " ( 3-3, Fig. 1 ) once and the
" Max " symbol along with the maximum value will appear on
the display.
(b) Press the " Max./Min. Button " again, the " Min " symbol
along with the minimum value will appear on the display.
(c) To exit the memory record function, press the " Max./Min.
Button " continuously for at least 2 seconds. The display will
revert to the current reading.
(d) Clear the Max./Min. value recorded by pressing the
" Hold Button " ( 3-2, Fig. 1 ) once. Previous recorded
Max./Min. value will be given up and then revert to the
REC. function keep on recording.
5-3 Auto Power Off Disable
In order to prolong the battery life, the instrument has "Auto
Power Off " function. The meter will switch off automatically if
no buttons are pressed for around 10 minutes.
6. BATTERY REPLACEMENT
1) When the LCD display shows " " symbol, it is necessary
to replace the battery. However measurement may still be
made for several hours after the low battery indicator appears.
2) Open the " Battery Compartment / Cover " ( 3-12, Fig. 1) and
remove the battery.
3) Install a 9V battery (Alkaline or Heavy duty type) and then
reinstate the cover.
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