Oregon Scientific 30.3016.54.IT Manuel D'utilisation page 48

Note:
In the event of changing batteries in any of the units, all units need to be reset by following the
setting up procedures. This is because a random security code is assigned by the transmitter at
start-up and this code must be received and stored by the temperature station in the first three
minutes of power being supplied to it.
SETTING UP:
Note: This temperature station receives only one outdoor transmitter.
First, insert the batteries into the temperature transmitter. (see "Install and replace
1.
batteries in the temperature transmitter").
2. Immediately after and within 30 seconds, insert the batteries into temperature station
(see "Install and replace batteries in the temperature station"). Once the batteries
are in place, all segments of the LCD will light up briefly. Following the time as 0:00 will
be displayed and indoor temperature. If these are not displayed after 60 seconds,
remove the batteries and wait for at least 10 seconds before reinserting them.
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