La Crosse Technology WS9090 Instruction Manual page 27

after 3 minutes, the batteries will need to be removed from both units and
reset from step 1.
4. In order to ensure sufficient 868 MHz transmission however, this should under
good conditions be a distance no more than 100 meters between the final
position of the Temperature station and the transmitter (see notes on
"Mounting" and "868 MHz Reception").
5. Once the remote temperature has been received and displayed on the
Temperature station, the DCF time (radio controlled time) code reception is
automatically started. This takes typically between 3-5 minutes in good
conditions. If after 10 minutes, the DCF time has not been received, press the
SET key to manually enter a time initially.
Note:
Daily DCF reception is done at two hours interval until a reception is successful for
the day. If the reception is still not successful, then the next try takes place at 00:00
the next day.
If reception is successful, the received time will override the manually set time. The
date is also updated with the received time. (Please refer also to notes on "DCF-77
Radio Controlled Time" and "Manual Time Setting")
INSTALL AND REPLACE BATTERIES IN THE TEMPERATURE
STATION
The Temperature station uses
LR3, 1.5V batteries. To install and replace the
batteries, please follow the steps below:
1. Remove the cover at the back of the
temperature station.
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2 x AAA, IEC