Aquarium Digital Thermometer Fish for Tank Thermometers Large Numbers No Messy Wires Suck Inside of Terrariu Fish Tank Thermo-Meter Digital Heater Water for Top Gallon Aquariums Chiller

just drop it in the for tank and attached the suction cup to the inside of the for tank for easy and accurate reading

It floats and is secured by a included suction cup

Test range: -30 ~ 50 ℃;-20-120℉

Clear and easy to read scale that tells you, unmistakably what the temperature is in BOTH Celsius and degrees

Being that this thermo-meter is inside the for tank, it gives a much accurate reading of the water temperature than those placed on the outside