The ReptiTemp Digital Infrared Thermometer is a small pocket sized Infrared Thermometer that instantly measures terrarium temperatures with the click of a button. Perfect for all reptile and amphibian keepers! This great tool will allow keepers to monitor thermal gradients, basking sites, shelters, incubation and hibernation temperatures, and more. ReptiTemp Digital Thermometer can be set to read temperatures in both Fahrenheit (-28° to 230°F) or Celsius (-33° to 110°C). There is a Min/Max function that allows you to monitor the fluctuations in your terrarium over time. Battery included.