The aquarium thermometer with jumbo LCD display, continuously shows the Indoor temperature and fish tank temperature. with adhesives at the back of the meter, you could put it stick on a tank wall, but notice that do not put the thermometer into water, in the back,you will find a temperature sensor, that is for testing the ambient temperature.
* indoor & inside tank temperature display
* temperature unit ℃/℉ changeable
* Temperature Range:
Temp. inside tank: -10℃～+50℃ (14℉～+122℉)
Indoor temp.: -50℃～+70℃ (-58℉～+158℉)
* Product Dimension: 79×42×10mm
* Power-supply: 1.5V（AG10）x1