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DST Setting Module : 5146 Firstly, make sure it is in the Timekeeping Mode. <Timekeeping Mode Screen> - Day of the week - Seconds - Date or Time To return to the Timekeeping Mode, press (C) button several times. In the Timekeeping Mode, hold down (A) button for about three seconds.
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DST setting (ON or OFF) will appear in the lower display. Press (D) button to toggle ON and OFF. Press (A) button to exit the setting screen.