SEFRAM MW 3390 Notice D'utilisation page 24

Min / Max Hold
 MAX : Meter is saving the maximum
and minimum value. Maximum value is
displayed.
 MIN : Meter is saving the maximum and
minimum value. Minimum value is
displayed.
 MAX MIN (flashing) : Meter is saving
the maximum and minimum values.
Present value is displayed.
 Normal : Press and hold MIN MAX to
return to normal operation.
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