Comark C9501/IS - Manual (Page 12)

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2.6 RECORD Key
Press once to put the instrument into record mode. This
will be indicated by the word RECORD on the display.
Maximum and minimum pressure readings can be
stored and displayed while the instrument is in record
mode. When the instrument is in record mode, press
key once to display the current maximum reading and
press again to display the current minimum reading.
Pressing the key a third time will return the display to
normal measurement.
Record mode can be cancelled and the max/min
readings cleared by pressing and holding down the key
until the word RECORD disappears from the display.
The scale key will operate while the instrument is in
record mode so that the max/min readings can be
displayed in different scales.
2.7 AUTO Switch Off
The instrument can be programmed to auto switch off
by pressing and holding down the HOLD key while
using the ON/OFF key to switch on the instrument.
The word AUTO appears on the display to indicate
auto switch off mode and the instrument will switch
itself off approximately 3 minutes after the last use of
the keypad. Auto switch off mode can be cancelled
by pressing and holding down the HOLD key while
switching on manually with the
ON/OFF key.