The humidity card itself is reusable. When the humidity level is low, the dots will change from pink to blue again. With long use, the color of the dots may faint. Then, you can replace the card. Indicator Changes Blue(Dry) to Pink(Humid).
The humidity card itself is reusable. When the humidity level is low, the dots will change from pink to blue again. With long use, the color of the dots may faint. Then, you can replace the card. Indicator Changes Blue(Dry) to Pink(Humid).
