La Crosse Technology WS-3610-SAL Quick Setup Manual page 36

Setting up using batteries:
Sensor sockets
Battery
Compartment
Important:
To avoid operating problems, please take note of battery polarity
if inserting any batteries. Also do not press any buttons after
start up until all sensor information has been displayed and the
radio controlled time has set. Doing so may interrupt
communication between the sensors and display or interrupt the
WWVB time reception.
1. Pull away the rain 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
Thermo/Hygro Sensor
Battery Cover
33
Sensor sockets