La Crosse Technology WS-1612 Operation Manual page 12

1. Remove the battery compartment cover.
2. Insert the batteries observing the correct
polarity (see the marking in the battery
compartment).
3. Replace the battery cover.
HOW TO INSTALL AND REPLACE THE
BATTERIES INTO THE THERMO-HYGRO SENSOR
The outdoor thermo-hygro sensor works with 2 x "AA",
IEC LR6 1.5V batteries. To install and replace the
batteries, please follow the steps below:
1. Uninstall the rain cover of the sensor.
2. Remover the battery compartment cover.
3. Insert the batteries, observing the correct polarity (see
the marking in the battery compartment).
4. Replace the battery cover and the rain cover onto the
unit.
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