WIDE USAGE:As a water meter, the device can be used in freshwater, marine, aquarium and glass containers for reptiles and amphibians. CONVENIENT: The water thermometer is easy to install. It can be held firmly on the surface of the glass container by the suction cup. The probe is for use in liquids, but please keep aware that the LCD screen cannot be soaked in the water. LONG CABLE: The cable is 100cm, which is compatible for aquarium in most sizes, it's convenient to use. ACCURATE MEASUREMENT: The thermometer measurement range is between -50 ℃ and + 70 ℃, resolution 0.1 ℃, measurement accuracy ± 1 ℃, you can select unit of temperature between Degrees Centigrade and Fahrenheit CONSTANT MONITORING: On/off is done by pressing a button. The device will not switch off automatically, which ensures a constant monitoring of the temperature. A 1.5V LR44 button cell is Not included in the packag XY-2010 Fish Tank Aquarium Air Driven Bio Corner Filter Sponge Fry Shrimp Nano