La Crosse Technology WS-2306 Operation Manual page 9

Setting up using batteries:
Sensor sockets
Battery
Compartment
Important: To avoid operating problems, please take note of
battery polarity if inserting any batteries.
1) Pull away the air flow cover of the thermo-hygro sensor to reveal
the three sockets (for the wind sensor, rain sensor and the base
station)
2) Connect the attached cables of wind and rain sensors to the
corresponding sockets of the thermo-hygro sensor by clicking
them into place.
3) Open the battery cover of the thermo-hygro sensor located below
the three sockets and insert 2 x AA, IEC LR6, 1.5V batteries and
close the cover.
4) Open the base station's battery cover located at the back of the
unit and insert 3 x AA, IEC LR6, 1.5V batteries into the battery
compartment and close the battery cover.
Thermo-Hygro Sensor
Battery Cover
Sensor sockets
8