The secret to the 4TE’s speed and accuracy is in its unique chilled mirror dew point Messwertgeber. The dew point Detektor is a primary measure of water activity. Unlike other water activity sensors, the dew point Detektor measures water activity (aw) directly, not secondary parameters correlated with water activity. Playground https://thoughtsonlearning.com/why-peak-playgrounds-should-be-your-first-choice-for-playground-equipment/