5PICS Child Forehead Temperature Sticker Thermometer LCD Digital Display Temperature Sticker for Kids Baby Care Tools

     The principle of reusability of the forehead temperature sticker: the sensitive temperature sensitive color changing material is used in the temperature area of the product, and different colors will be displayed in different temperature ranges. After the technology controls the color changing range of the material, it will change color according to the current body temperature after being close to the human body. 36 ℃ and 37 ℃ are in different temperature areas, so that the color will be displayed in the LCD temperature display area of the product. Take the human body away, and the color changing material will cool down after leaving the heat source, The liquid crystal area is restored to its original state, and temperature measurement can be continued after it is close to the human body again