Oregon Scientific WS6762 Mode D'emploi page 35

Note: In buildings made of reinforced concrete the reception of the radio signal may be severely impaired (see "Setting up the devices").
In order to correct any deviations from the exact time, the clock is automatically synchronized with the DCF radio signal every day at 1:00, 2:00 and 3:00.
Reception of the DCF radio signal can also be started manually on the weather station.

Press the + and – button (35), (36) at the same time. The weather station attempts to receive the DCF radio signal. This process takes several minutes and
is indicated by a flashing radio tower symbol.
If the connection with the DCF radio signal cannot be established, the search is stopped.
Note: If the clock of the weather station cannot receive the DCF radio signal due to errors, too great a distance from the transmitter or similar reasons, it is
possible to set the time manually. If reception of the DCF signal is successful, the manual settings are overwritten.
Manual settings
The reception of DCF radio signal where the weather station has been positioned may become degraded or interrupted. If this happens you can set the device
manually.
Follow these steps:

Press and hold down the MODE button (34) for about 3 seconds. "12Hr" or "24Hr" blinks in the display. Press the + or – button (35), (36) to choose the
desired hour format.

Confirm your setting by pressing the MODE button. The temperature unit "°C" or "°F" flashes in the display. Press the + or – button to choose the desired
temperature unit.

Confirm your setting by pressing the MODE button. The barometric pressure's unit flashes in the display. Press the + or – button to set the desired unit
(hPa/inHg).

Confirm your setting by pressing the MODE button. The time zone indicator flashes in the display. Press the + or – button to set the desired value (-2 to +2).