Sybon Digital Submersible Thermometer - Freshwater
Precision accuracy and an easy-to-read display make the Sybon Digital Submersible Thermometer the one you want for your tank. Accurate down to plus or minus one half degree and can report temps from 32 to 176 degrees Fahrenheit. Displays temperature to the nearest one-tenth of a degree.
Includes: (1) transparent suction cup for mounting to glass or a smooth surface in your tank and (2) 1.5v cell batteries (one for spare)