SATO SK-L750 Series Instruction Manual page 15

If "End at ..." is selected, specify the number of data items to log as follows.
The upper segment is for setting the ten-thousands digit, and the lower
segment is for the thousands and lower digits.
Press the SET key to change the value, and the REC key to fix it and move
to the next digit. Long Press of SET key for more than two seconds quickly
changes the value.
• Display of alarm setting
Indicates whether or not the alarm is set. Note that it does not show any alarm
value. Alarm values can only be modified via the software.
Pressing the SET key switches the alarm on and off.
When the alarm is on, an indicator "ALM" is lit in measurement mode.
• Display of the preset start setting
Indicates whether or not the preset
start is activated. Pressing the SET
key switches on or off unless the set time is prior to the current time. Note that
the preset start date and time can only be modified via the software.
When it is switched on by pressing the SET key and then the REC key, the
set date and time is displayed as below.