The Combi Weather Station WETTER-01 was developed for the diverse requirements of building control systems. The device combines precision of measured value acquisition with a very compact design. It can be easily integrated into new and existing installations. A total of 11 meteorological parameters are recorded by the device in a very small space. The wind is measured without mobile parts. The thermal anemometer measures wind speed and direction without mechanical wear. There is no need for costly maintenance. The integrated GPS device automatically receives the date, time, station altitude and geographical position. It is not necessary to set the time manually. From the GPS parameters, the weather station determines the azimuth and the elevation of the sun's position The altitude above sea level and the measured air pressure are used to calculate the reduced air pressure. All parameters are output with the data telegram. The weather station is mounted on a mast or directly on the building using a wall bracket. Via an ISYGLT MODBUS weather sensor interface module, the weather data are safely transferred to the ISYGLT IP Master.