The new Zoo-Med ReptiTemp Digital IR Thermometer is a small pocket sized Infrared Thermometer that instantly measures terrarium temperatures with the click of a button. This great new 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. Instantly Measures Terrarium Temperatures Great for Monitoring Basking Areas, Thermal Gradients, Incubation, and Hibernation Temperatures. Temperature measurement Range -28° to 230°F (-33° to 110°C) Min/Max Function °C/°F Switch Includes one CR2032 Lithium cell battery