Froggit WH4000, Руководство пользователя

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wind direction, representing for the direction of North, East, South
and West. Wind direction sensor has to be adjusted so that the
directions on the sensor are matching with your real location.
Permanent wind direction error will be introduced when the wind
direction sensor is not positioned correctly during installation.
1.3. Install wind speed
Push the wind cup into the shaft. as shown in figure 5.
Tighten the set screw with as shown in figure 6. Make sure the wind
speed spin freely.
Figure 5 Figure 6
1.4. Install Batteries
Insert 2XAA batteries in the battery compartment. The LED indicator
on the back of the transmitter will turn on for four seconds and
normally flash once every 16 seconds (the sensor transmission
update period).