Klarstein Wonderwall Instruction Manual page 21

Set the exact end time (hour and minutes) with +/- and confirm with
[OK]. Programming is now complete.
Set the start time (ST) and end time (ET) for several days.
The timer can either be programmed for all days the same or for individual days
separately. There are 3 weekday modes. The display shows the following:
Every day
In the circumstance you choose 3 types of day modes above in the ST programming,
the ET will follow the selected ST day. the switch will be powered on/off base the time
you programmed for your every routine.
Set the start time (ST) and end time (ET) for certain days
ST: Specific day to start
Working day
ET: Any day in the week
to end
Weekend
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