Measure the temperature of your aquarium, DIY beer and wine barrel, terrarium, greenhouse, vivarium and any pets, or any area in your home. The correct water temperature is very important for the health of your fish, take your beer and wine or use- them in the kitchen or at home to monitor the temperature. Small and compact. Easy to install, just peel off the back of the sticker and the transparent protective film in the front and stick it on the outside wall of the aquarium, that’s it. The thermometer changes color depending on the ambient temperature. If the ambient temperature is 27°C, the bottom of the scale mark 27°C becomes colored, and the other scale marks remain black. Product size:< /p> 13 cm / 5.12 in length 1.8 cm / 0.71 in width Measurement range:Celsius degree10-40°C Quantity: 3 X Sticker Thermometer