2Pcs Aquarium Thermometer Fish Tank Thermometer Temperature Sensor Suction Cup, Digital Waterproof Fish Tank Meter for Terrarium for Top Gallon Aquarium

Clear to Read - Designed for quick, easy, and reliable temperature readings.

Suction Cup - Each Floating Aquarium Thermometer comes with an optional suction cup, which allows you to place it alongside the tank’s walls for even easier access for a temperature reading. It floats and is secured by a included suction cup.

Safety - Our Floating Aquarium Thermometers are mercury free, They’re safe to use inside both freshwater and saltwater fish tanks.

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

Test range: -30 ~ 50 ℃;-20-120℉.