This temperature monitoring sticker is for those who want to ensure their fish tank is always at the right temperature. The color-changing feature provides a quick and to check the water temperature . It's an essential tool for maintaining the health and well-being of your aquatic pets, helping to prevent temperature-related stress and illness. Features -Color:Black -Material:PET -Size:13.00X2.00X0.10cm/5.11X0.79X0.04in -Visual temperature change: these aquarium stickers provide a clear visual indication of water temperature changes, helping you maintain optimal conditions for your fish -Extensive temperature range: measuring temperatures from -10 degree centigrade to 40 degree centigrade, these stickers are suitable for various environmental conditions and seasons -Effortless installation: simply stick the labels onto the aquarium surface without the need for batteries or external power, making them convenient -Durable adhesion: the backing ensures the stickers remain securely in place on the aquarium, providing performance -Clear temperature display: the color coded temperature indicators are easy to read, allowing for quick and accurate temperature monitoring Package list: 4 pcs x 6pcs x temperature sensitive color changing stickers