I bought this product because of the mostly positive reviews here. However, I am very disappointed. The meter displays in our apartment at consistently more than 60% humidity. Even right after airing was the minimum at 54%. This can not really be. A hygrometer another brand placed beside indicated not only 0.7 ° C less, but 10% (!!!) less humidity. That's really too much measurement uncertainty! Too bad that the 30 days have been around since purchase, otherwise I would that thing be returned immediately. Overall, I can not recommend the product.
