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1. Pull out the battery holder at the bottom of the transmitter.
2. Insert the batteries, observing the correct polarity (see marking).
3. Replace the battery holder on the unit.
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 Weather station in the first 3 minutes of power being
supplied to it