This temperature-sensitive sticker is designed to monitor the temperature of your aquarium, ensuring and comfortable environment for your fish. The black adhesive strip changes color to indicate temperature variations, making it easy to read and understand. Ideal for both freshwater and saltwater tanks, it helps maintain optimal conditions for life. Features -Color:Black -Material:PET -Size:13.00X2.00X0.10cm/5.11X0.79X0.04in -Temperature visualization: easily monitor water temperature changes in your aquarium with these color changing stickers, ensuring optimal conditions for your fish -Wide temperature range: suitable for various seasons and regions, these stickers measure temperatures from - centigrade to 40 degree centigrade, accommodating diverse needs -Simple application: no batteries or external power sources required; just peel and stick the adhesive labels to your aquarium surface for instant use -High adhesive strength: the adhesive backing ensures the stickers stay firmly attached to the aquarium surface, preventing them from falling off -Easy to read: the paper displays the temperature with clear, colorful markings, making it easy to monitor Package list: 6pcs x temperature sensitive color changing stickers