The GFTB 200 takes quick-response measurements of air pressure, humidity, temperature and further derived units in computer rooms, museums, galleries, churches, offices, living rooms, warehouses, greenhouses, swimming pools, production areas, refrigeration and air conditioning, construction, building physics, damage assessment, etc. Through the use of highly accurate sensors this device has a notably greater precision than comparable devices. With the additional display options 'dew point temperature Td ', 'wet bulb temperature Twb', 'absolute humidity [g / m³]', and 'moisture content of the air [g / kg]', the state of the air is precisely and clearly shown. Through the low power consumption, the device can also permanently operate as an Air Station.