humidifier knows / humidifier

Which we design is a humidifier that is more humanizer than usual ones. I need it to let people know when to turn it on, realized by the Bionic leaves that use moisture sensing material. The leaves turn to yellow means that it’s dry in the room, signaling to people to turn it on. And when the humidity comes to normal, the leaves will turn back to green. We named it “humidifier knows” to show the aim, which is to make humidifier simpler and more readable, to make people know what it knows.