Zilla Digital Terrarium ThermometerMeasure terrarium comfort with digital precision. Cold-blooded reptiles stay healthier and more active with the accurate monitoring of a Zilla Digital Terrarium Thermometer. Press a button to display temperatures from -10°F to 140°F (-23°C to 60°C) in either Fahrenheit or Celsius, graduated in 0.1° increments that reveal temperature trends long before they can harm pets. Equal accuracy is achieved in both aquatic and terrestrial environments, simply by positioning a temperature probe (attached to the thermometer by a 39" lead wire) in the spot to be monitored. Keep the lead out of sight by securing it with the included suction cups. Choose constant temperature monitoring, or turn the unit off to save battery power (a battery is included).