Theben SELEKTA top2 Series Manual page 16

Either confirm with OK or modify the hours (flashing) with the arrow buttons and then
confirm by pressing OK.
Either confirm with OK or modify the minutes (flashing) with the arrow buttons and
then confirm by pressing OK.
Either confirm with OK or modify the changeover rule for the automatic
summer/winter time switchover with the arrow buttons and then confirm by pressing
OK.
 The time switch is now in auto mode (automatic mode).
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