The wind direction sensor identifies itself by is frequency. It can be connected to any input from 1 to 4.
The design of the iMETOS makes it more comfortable to enter the box from the downside and to connect
the sensor to input 2 or to input 4.

The wind direction sensor is different from the other sensors in its mode of measurement. It uses its own
intelligence to measure every second. It transmits the average of its readings on every request from the
main unit. To be able to measure during the periods, the main unit sleeps, this sensor has its own small
battery. This battery should last for 10 years. If this sensor fails to work after several years, please
note that it might be the battery which is empty.

On northern hemisphere the wind direction sensor should point towards north and the wind speed
sensor should point towards south again.