Features: Simple to use and convenient to read. Measure the temperature of your fish for tank, your DIY Brew Beer and wine barrels, Terrarium, Greenhouse, Vivarium and any sort of pet for tank, or any place in your house. The right water temperature is very important for the for health of your fish, get beer and wine right or use in kitchen or around the home to monitor temperature. Easy to install, just peel off the back of the sticker and the transparent protective film at the front and stick it on the outside wall of the aquarium, that is it. No battery and suction cup to worry about. Specifications: Material: PET Weight: 10g Size: 13x1.8cm/5.11x0.70inch Measurement Range: Celsius degree10-40C Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 10x Aquarium Thermometer Stickers