Medline MDS3003 Guide D'utilisation page 13

While the number is blinking, press the button "MEM" to increase the number. Keep
on pressing the button "MEM", the number will increase fast.
c. You can turn off the monitor by pressing "START" button when the minute is blinking,
then the time and date is confirmed.
d. The monitor will turn off automatically after 1 minute of no operation, with the time
and date unchanged.
e. Once you change the batteries, you should readjust the time and date.
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