La Crosse Technology WS 550 US - Manual (Page 15)

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The fully mounted TX 550 US Insert batteries, position of the key
- Open the sensor housing by rotating it towards the left and pulling down the cas-
ing (see picture below).
- Use a pointed object to press the key above the battery compartment and insert
three AA Alkaline batteries according to the polarity marking in the battery com-
partment. Release the switch and then remove any adhesive tape that you may
used to secure the wind meter.
- Bring the respective receiving station in the receiving mode according to the
instructions of the corresponding Operating Instructions (also see chapter 3.1).
- Use a pointed object again to press the switch on the sensor. The receiving sta-
tion should now register the data from the sensor.
- Close the casing again by pushing it upward and turning it to the right till it locks
in.
Remove
Turn to the left,
remove downward
Mount:
Mount,
turn to the right
Key