According to the manufacturer (website) operating instructions... etc... Is it dry, damp, warm or cold? Selina shows it. With a smiling smiley she shows that the humidity is optimal. An unhappy face of Selina means that the air is either too dry or too humid. The hygrometer lady is equipped with the latest technology and measures humidity and temperature precisely. I have never seen the smiley neither smiling nor sad... what's wrong ??? Broken Thanks for the clarification Greetings