The round thermometer sticker is 50mm/ 1.97inch diameter, the temperature measurement range is 18℃~36℃. It displays on only Celsius with big size number, convenient for reading. It’s simple to use external stick-on thermometer for measuring the temperature of your aquarium. Adhesive by the back, just peel off the tape and attach to outside/surface of aquarium. The thermometer changes color according to the temperature. If the surrounding temperature is 20℃, then the background of the scale mark for 20℃ will turn colorful and the other scale marks will remain black.
5cm/ 1.97inch diameter 18℃~36℃ temperature measurement range Display on only Celsius, big size number, convenient for reading Adhesive by the back, just peel off the tape and attach to outside/surface of aquarium Different temperature with different color Skin card blister packaging with nomoypet logo